Your video helped me a ton, BigDog. I had just replaced all the backlight LEDs on a 55" RCA television, using your videos as troubleshooting guides. Once the backlights were working, I all of a sudden had no picture. I suspected the T-Con board and did some in-circuit testing of surface mount capacitors, after hearing you stress that they can be a real problem. I found that several were showing a short, but I knew that they were connected in parallel, and that most likely only one was the culprit. I noticed that one of them seemed brittle and my test lead would kind of chip away at it, while the others were not brittle. I removed that suspect cap with hot air, and low and behold, I got 12v back, whereas before there was a very low fluctuating voltage. The picture works now and I'm very happy, as I am working on this TV for my uncle and was really hoping to save it. I have the exact same TV that I'm currently using as my computer monitor, and it's been a great set. I do plan to replace that bad capacitor, or I'll just wait for the new T-Con board that I had unfortunately already ordered. Thank you sir!
You crushed that demo! Thank You for taking the time to record this and demonstrate your diagnosing skills and walk away with a legit fix! I am much more informed now! Thank you!
As someone who does cellphone repair and tv mounting for a living, one technique I’ve found incredibly important to avoid stripping screws is to first go in reverse and you should feel/hear the screw skip itself into the hole and then it will go straight in. Especially important on iPhone repairs.
Yes, man! All my life I have been using this technique, I came to it myself. And this is the first time I meet a person who does the same! Delight and respect!
bigdog8882, I watched this video last night after being given a 42" LCD with working back lights and sound, but no picture. Most video's on the subject are pretty much repeating the same information over and over, I'm not saying it's bad information, but there's some key things you need to know in certain scenarios and they don't always explain that properly. The one key thing that brought your video to my attention was when you found the short across the capacitors in the T-Con board and you then took the time to explain that when you disconnected the panel strips from T-CON the short was no longer present on the T-CON. This led you to check for shorts on panels own circuit. You also took the time to remind us that no capacitor should have negative on both sides. That is what resolved my issue. I ended up replacing 2 SMD capacitors on the panel with my soldering iron and a magnifying glass on my living room floor. I now have a 1 yr old 42" LCD and it was completely free! Thank you sir, good advice :-)
In my case, it wasn't water damage. 4 capacitors on the driver board tested as negative on both sides. No obvious signs of damage, heat or any of those things, it was just simply a blown capacitor. Obviously I didn't know which one it was, so I started with the one nearest the strip connector. When I removed that capacitor I tested the other 3 remaining on the board that were in short circuit and they were still in short circuit. I removed the next capacitor and retested and this time the remaining 2 capacitors tested correctly with no short circuit. So I just replaced the 2 capacitors I removed with some I recycled from my scrap pile. That was it, job done!
You are just incredible!!! Thank you so much for all the help, followed your tutorial and just fixed my TV after looking for a solution for days! My only doubt it's if I can replace the SMD capacitor for one that looks exacly the same or if I need to look for a certain one? Thank you once again!
I ABSOLUTELY LOVE YOU. I was going insane with my TV. Replaced every board and still no picture. I was ready to call it quits. Watched this video and got a second wind of hope. Replaced one teeny tiny capacitor and it works again. THANK YOU SO MUCH!!
This is a great video of troubleshooting a T-Com board and capacitors!! I appreciate BigDog8882 sharing his process and his passion! Please keep up the great work BigDog8882!! Also, I like to see people saving the landfills by fixing these TVs! How many other TVs have been thrown out because of an easy fix?
Superman Glasses? LOL I need Superman's grandfather's glasses. I LOVE the in the trenches reality you show rather than editing out all that like most do! Good Man! Thank you! God's work comes through good people!
Got the same problem with a TOSHIBA 40L3451DB, I originally thought it was the tcon board but it doesn't have one, after watching this video I'm going to strip the tv down a bit more & check around the driver boards. Thank you for the video , very useful information .
Impressed with your soldering skills! Great work! Currently have a LCD computer monitor that's suddenly gone blank - seems that a similar process might be going on (sent it back to ACER and they want £800 for a new panel - a new monitor would be about the same!)
Sometimes I don't understand people. 325K Visual and only 2.66K thumbs up. OMG disappointing (for me)...come on man...let's cheer up... On the other hand, (14:56) I have a SMD990. Reliable (in/out) of the circuit. Price versus function ratio in favor of the technician... I didn't leave the link so as not to violate any channel rule. Excellent video to train technicians in fault detection. Thank you very much for sharing sir.
Just wanted to thank you for this video. i picked up an LG 55LN5600 for free that someone had tried to repair. It had 3 LED's out and I replaced them so I had back lights but no picture. Checked the Tcon and fuse was blown and no apparent shorts to ground. Replaced fuse and now have TV up and running.
Great job getting that telly back up and running! I do not have good soldering skills. I do have a question though...I was given a Hitachi 39" 720p TV that I was going to use as a computer monitor. It powers on, including the backlight, but has no picture, menu, or sound. Suspecting the EEPROM chip, but lacking soldering skills, I replaced the mainboard. It's an all-in-one board -- power supply and T-con. The screen has its own driver boards. Replacing the mainboard made no difference. Backlight, but no picture or sound. That's baffling to me. If the screen/driver boards were bad, I should still have sound. The speakers have a completely different connection on the mainboard. Would a bad video driver board prevent the speakers from working? I tried disconnecting the video driver board completely, seeing if I could rule it out. Or should I contact ShopJimmy, where I ordered the replacement mainboard, and RMA it. Is it possible I got a bad board?
Bad LCD Panel.... You probably don't have sound because you don't know what input the TV is on if you cant see any image on the screen. You can try the Tape method. You Tube "Frugal Repair"
I have a TCL with backlights and no display. I replaced both the power supply and main board. There is no TCON, so I think the problem is on one of those scaler boards along the bottom.
Thanks big dog just fix a 60 inch Vizio 4k that had a bad capacitor in the buffer board I just checked it like you said and id worked, keep up the good videos.
Awesome video sir!!!! Similar symptom on my smaller TV, but structurally, not applicable to it at all. I still watched it through, and saw that you killed the main video board by bridging an open fuse with the power on....haha!!! But we all make foolish mistakes..... In fact, I once had an electronics teacher tell us not to EVER replace a fuse until you investigate why it blew in the first place. I’m probably worse than you at mistakes though. Anyway.... my respects!!! Thank you for this video Sir. Very informative.
Picked up a free LG 65 inch TV with sound and backlight. Went through all the troubleshooting and checked all the parts. Even tried the baking of the mainboard to no avail. Got tired and ordered a repair kit from someone on eBay with over 1K sales and 100% good feedback. Guy showed pictures of working TV with busted screen. The parts were what I need so I bought the kit which includes mainboard, tcon, power board and even two extra cables. I replaced Tcon, mainboard, powerboard and then the cables, test it out one at a time. Nothing worked. I removed the ribbon cables and even slightly clean and reseating them. What else could it be? Thanks!
Great Video. Try getting a 2nd camera to do the angle 90 degrees so we can see you when you're working. Have a PCMonitor Dell SE2717H. White Horizontal lines on a black screen where the clean message ought to be (Dell self-test - only power cord plugged in). Caps on power board all look good. Opened up the TCon panel. Everything is so incredibly small on a very long and narrow circuit board. Do you have experience fixing this Monitor? Thanks.
very intuitive. Got a Dell 2210f monitor that has faulty panel. Will look ad driver board and check caps. The power board protection cct kicks in 1 to 2 secs after power-up - image and backlight can be seen during this short period.
How are you. Thanks for the information. My Samsung LED TV has vertical lines at the bottom of the but these lines would disappear and reappear after some time. What could be the problem
I got one too, lol. Its the screen. Most likely the driver boards or the cof's in the ribbons. Just have to watch it like that. The screen most likely is not available.
great job sir i been fixing tvs since 1982 over 30 years now lucky burn out the driver bored how long u been fixing TVs as I started on valve sets had lots of problems wth lopts
Wats up big dog i got a 47lw5600 and i did wat you did on other video.I heated up that chip behing heatshield for 3mins.Put it together and it worked enough to watch movie.Than it went to black screen again.With sound.Wat shld i do next heat it longer?
Thank you very much this video helped greatly! Wish I would of saw your video before I bought a T-con board. Had three shorted caps on the left panel board after removing two the short was gone. Tested the two I removed only one was shorted the other was good. After replacing the bar cap the Bravia KDL-55W802A had video once again. The only problem is now I have ghosting of high contrast after images. They clear once the screen is refreshed with a dark image such as a blank black screen at the end of a program. Any ideas? Thanks again. 😁
I figured it out, the tcon wont produce 8.5 even when the tcon isnt connected to the panel for some reason, maybe because its a proscan tv , thanks Big Dog
BigDog, I'm sure you've seen the infamous Vizio T-Con board transistor failure, I've got one here...I can't locate the part number, I've seen general specs, people are calling it an NPN, others call it a PMOS...thoughts? This is on a 70i-A3 model...thanks for any insight.
@@bigdog8882 thanks for responding anyway.....the board is inexpensive, I'll wait till the replacement arrives. You were correct on my other question, the real culprit ended up being a bad 6 foot HDMI cable I had installed a few months back for a sound bar. Don't know why it would go bad over time, but it is what it is. Thought I had eliminated outside source as the problem, I guess not.
I would love for you to help me with some T-Con issues I have on multiple TVs. the pictures work find once I do the backlight change, but over time when I test them daily, they are now losing picture. All I have is a backlit screen and no picture. Can they get shorted for some reason when I am doing these backlight changes?
Great video, thanks so much. I only wish that I would of found it earlier. Driver board got wet, and I cleaned it to much with alcohol. I knew not to clean he screen, had a roof leak. Cheers
Hey Bigdog8882, I am trying to trouble -Shoot my JVC 55 Inch LED Smart Curve TV. Model LT-55KC87 With back light and no picture. I have trouble-shoot unit I reach the T-Con board to the driver boards (This TV has 4 driver boards), however, when I remove the ribbon cable from the driver board on the left side the TV works with that side of the display blank. I tried switching ribbon cable from left to right and it makes no difference. I check to see if there was any corrosion of damage components on that driver board but can't fine any. Any ideas what can be the problem? If I remove the ribbon cable and power on it works and once I plug that cable back in the TV picture goes blank.
@@bigdog8882 Thanks for your reply. I have tested all the components on the Driver board and nothing seems to be shorted. Can it be the panel itself that is causing the short?
Hello Need your help please, My tv is down, when I turn it on the screen is black, there is sound, and the slab is backlit. I checked the fuse of the t-con, 12v ok On the other hand there are several ceramic cms capacitors are in the courtyard circuit (all the tablecloths unplugged) The problem comes from capacitor? If yes can we change that the capacitor cms, or t-con? Thank you in advance
Well done! That was very impressive. I tried replacing a T-Con borad and the fault remained (weied colours all over). What's the chances I was supplied a bad board? I think I'll give up, Happy Christmas!
Hi, do you happen to know what solution or how to fix(jumpering side cof, cof is a bit different from others that have round visible test points for easy solder) broken connection at the side cof, there are 3 cof at the side and the 3rd one is faulty having black display or black/colored lines, not the cof itself, just the panel wires connecting 2nd and 3rd cof. The side panel where the cof are located had a small crack between 2nd(middle) and 3rd(last or bottom) cof and that caused the black lines display. 1st(upper) and 2nd(middle) are both okay, just the 3rd(bottom) is bad because of the crack(lost wires/connection) on the panel. Please answer.
i have a samsung panel - about 10 years old... started looking... well.. .funny - like it was overexposed - everyone looked like their faces were shiny... i get it the tv is old and a new replacement is cheap... but i'm willing to have a bash at fixing it, if it's fixable. when do you figure out the point is, where a tv isn't worth it? would a lcd panel just go on forever or do things just finally 'wear out'? newbie to tv repair, but do a lot of diddling around with components for various projects.
Hey man, i have exactly the same problem at the same location, i don’t know if it’s water or weakness point in the board, anyways where can i find those small component . Thank you.
Very informative video! I have a 55" LED Finlux TV that just went black as i was watching it. Found this video after some searching and followed the same process of elimination. Found that same short over the capacitors on the t-con board, however that micro-fuse was not blown. When disconnecting the ribbon cable going the right driver board the short was gone. And sure enough, when powering up the TV with that ribbon disconnected i got picture over half of the screen. I see no apparent damage on the driver board, though. Is there any chance that one of the caps just went bad or should I consider this one a goner? EDIT: Found the problem! It was indeed one of the caps on the driver board that went bad and shorted. Replaced it with one from a salvaged computer board. Cheap fix. Thank you! :)
This fix you found out about because of someone allowing liquid to run down the screen to soak the board causing a short at a capacitor might also be the issue with the Toshiba Model 57HM167 I have with white spots like outer space stars appearing behind the menu or full screen without menu and there is no audio present nor video. I will investigate where that could occur at. I got a 2007 model Toshiba Model Number 57HM167 manf June 2007 so its not above 2009 and has no HDTV capability and that is the only antenna I have which works fine on my VISIO TV. I do have a converter for converting older model TV's so they receive digital HDTV signals changing to analog but it will not work for the Toshiba. A problem I see comes up when turned on the screen itself has many white dots on it, looks like a space broadcast of the stars but none ever change position & stays stable the entire time I am working with the menu using the new GE UltraPro Universal Remote. I do a scan for channels and none are detected using this antenna, so I believe this Toshiba is mainly for cable TV use only, not HDTV usage. I am using channel 3 for the down conversion channel operational scan and nothing being detected seems illogical the Toshiba has a antenna reception menu choice. There is no images at all just that stary outer space look behind the menu where a channel should appear. I don't know if it is a tuner issue or some screen issue causing this problem on HDTV reception using my converter from the FCC I bought back then. Can anyone help please.
Thats a DLP TV. If U got White dots then you need to change the DLP/DMD chip in the light engine. Just order it from Ebay or Amazon using your model #, and theres plenty of Video's on TH-cam to show U how to replace it. Ive did plenty of those. Common issue.
I appreciate that coming from a expert such as yourself, that was no slight miracle. I got it sitting in the living room but using my VISIO which is a small 42 inch LCD TV and it works for HDTV so the antenna on it is no issue, my mothers VISIO 48 inch LCD TV got some lemonade splashed on its front screen and it ran down into the horz-vert board so there are lines going up and down the video on my right side while left side displays OK and there is sound. One day I hope to fix its problem. I was thinking I had to buy another display for it till I saw you fix this Samsung TV. I got two TV's both 48 inch LCD TV's given me that I relocated to the other home which will not turn on at all. Next time I go there I will get the information on them for you to see. If you see the same comment on another TH-cam video you presented disregard, I believe you have answered my question very fairly and thanks again. I'll keep in touch, from Prattville Alabama to you.
I went to Electronic Trade School (Instructor Mr. Jones), I quit after 8 months cause the math in another class (required course) was to technical to remember at the time. A girl there named Paula Jones told me a story, she said she has a uncle that did not like Bill Clinton so much that he was willing to help her snoop him under the table out of office, he was a private eye in Washington, she went a couple days to introduction to the class of printing I also studied then suddenly she never came again, the instructor named Steven (printing class) said she probably dropped out. Well, she did never to return to the Trade School John Patterson which changed its name while I was attending the printing course which after one year of electrostatic printing machine and staple machine I ended up sick and had to end my classes, I found I was allergic to the cleaner I was using to wash my hands and arms in plus I could not breath the stuff which was a giveaway I should have paid closer attention to use lava soap instead of that industrial cleaner I learned was jet fuel. So when the story of Paula Jones broke in Washington DC I contacted the school to attempt to get them to verify that Miss Paula Jones had dropped out of the class, they refused to tell me anything about Paula Jones saying there was no record of her ever attending. Heck, I know she did attend cause I walked in on her and the instructor in the closed closet and she was attempting to charm him and he kept telling her he was married and had a child which got her so upset that she got off the shelf she had her leg propped up on with dress pulled up and walked quickly out the back door, I said excuse me to the instructor and followed her out the back and she was standing there crying. Next the bell ran and we all were to go to the lunchroom to eat so I went with her, she sat at a table near to the instructor and I sat further back to their left, she eat then we went outside to talk at the parking lot, by chance she had parked her Vega auto next to mine and started with the story. Well, I had a story too so I gave my take on hiking to San Francisco California and back which was a blast, it had been so cold up there the snow was five feet thick but I was lucky a Greyhound bus driver stopped to give me a ride then he stopped alongside the otherside of the highway at a restaurant and said come inside and I'll buy you some coffee that he normally drove the empty bus back to Los Angeles from San Francisco and stopped there for coffee. Miss Jones did not seem as interested in me as I was in her and she got in her car and left the parking lot telling me thank you for being her friend. It was a true experience I esp remember because of the helicopter that landed in the parking lot from the state troopers whom delivered the Crime Stopper Neighborhood Watch order for us to print, cut, fold, and staple (my task I did while everyone went to eat one day). It was all done on the German large press I wanted to learn how to run but two guys were already assigned it so I got stuck with a chubby girl with glasses on the electrostatic printing machine. She was moved over from paste-up of the negatives for the camera room another thing that got my interest, the staple room was in the room where the enlarger was at for the camera to make the plates for the German Press (a huge heavy cast iron machine that required moving stacks of paper under a feeder that fed one sheet at a time and they cranked it up to finish sooner). You do not seem to bother the subject matter with math much other than checking to see what you got compared to what you should have, but mine was paper technical nothing hands on at all both classes required math. I hope this was interesting and that I did not bore you much. I asked Bill Clinton in a letter to call me about Paula Jones and he never did. On my way back from California I went via New Mexico, Oklahoma, Arkansas, cutting down 69 into Alabama and to Tuscaloosa then got a ride to Selma Alabama and from there a ride all the way into Montgomery before the bridge and was eventually back on my street walking down it to greet my mother and father whom had been worried about me for a week, I called home in Tuscaloosa. So when a letter from White Sands Missile Testing site arrived at home my parents knew I was telling them the truth, my father was retired USAF and I left my ID card at the base gate when I went there to buy some food inside the base exchange, the man that drive me onto the base was my ride to Oklahoma CIty Oklahoma and he had forgotten I had to leave my ID at the gate and two Security police allowed me to enter the exchange to buy food & showed them my ID, they should have returned it once we left but they returned to the gate and we drive right through it without stopping. I got to drive his car, he was a Spanish Woodworking Instructor from Chicago, Illinois whom had been in Los Angeles on some student forum and met his classmates there before it was over, back when OJ Simpson had made a football play which hit the news on the radio before the criminal incident, I guess you can recall that far back. Anyway I had my joy, can't walk that much anymore, I'm lucky to get inside the pharmacy to buy my meds cause once inside there are electric shopping carts I drive.
Love the information you are putting forth but sure wish you could invest in a better video equipment so we can more easily see what you are doing.. Have you done any videos on the Visio?
I actually had 2 of those In my house. Those are really nice televisions with great sound. Unfortunately I dont have those TV's anymore and those Use CCFL tubes not Leds for the backlight.
Hi, I have a Haier model # 65UFC2500 tv. I do not get a picture or sound. I do get a blue light when the power is turned on. I also hear a slight sound from the power supply when I turn on the tv. If i attempt to push any button such as menu, ch, or input the blue light flashes from red to blue continuously. I tried to look at the screen with a flash light but could not see any images , nor did I see any lights through the holes in the back or without the back panel. The main board has a red indicator light for the optical out that comes on a few seconds after the power button is turned on. Do you have any information which could help me?
Here is a challenge for you, I took out the tcon and after testing, most of the caps are shorting, I tested most of the components but I’m unable to find the short, I’m out of ideas, what do you suggest?
Thanks BigDog... I have similar prob on Toshiba 32HL67US, no picture but sound. I think I heard something pop??? So no BBall game. Not sure - do I risk buying newer t-con board (May have probs), or troubleshoot my own board? Never clean screen so no H2O damage here... at best this seems like a project for my list, probably just buy new set cause I’ll never get ‘round to getting this done. That pop may indicate something bigger. Hate to toss a good tv though. Appreciate video. Jd
Big dog please respond, same thing happened to my TV last night, opened TV up and found the crustation from water on the lower board, I cleaned it with proper alcohol, re-assembled everything and I get the same thing. It does look like one of those capacitors blew out. Should I replace t con or do what you did in this video.
@@petermcdowell63 Well, U got water damage so its hard to say, You have to test the capacitors in the Vid like I did. Its a good chance that theres something bad on the driver board. U can try t-con, but dont give your hopes up.
@@bigdog8882 lol my Hope's are high after watching your video, I absolutely love this TV and dont want to junk it. My next step is to try to locate driver board and t-con board. And find a shop who knows what there doing. Thanks for the quick response, you da man 👊
i had a problem with my kdl-60nx810 sony I couldnt determine weather the tcon or the mainboard is the problem. i tried removing the cable that goes to the mainboard and the tcon still has the supply then I turned it on, then the screen turns to like color mode testing which displays color such as red green blue and gray and some shadowing. now I'm confused which one to change the mainboard or the tcon.
that is very nice!!! i have TV got the same prolem. you can hear the sound but no picture and the back lights there are fine...you just see the blue screen only...how can i resolve that problem?
Hello great video helped me a lot! I if a Samsung un40ju6500 no backlights or picture even with flashlight test the led lights come on when I disconnect cable from main to tcon but still no pic inreplaced tcon and main still nothing. Because your video I believe it's panel some of capacitors are beeping quite a few actually. A m I correct? Btw shows no water damage.
On the tcon, pull out the ribbon connectors (going to the panel) one at a time to if the screen lights up. If so, then U have a bad LCD panel and you can check for bad components on the panel driver board. (The one thats bad).
Panel is not shot as he says if the driver board or cof is bad. Nowadays the driver board can be replaced with the proper equipment anziotropic, or Z axis film, special remover for the tape , a T bar soldering iron, a microscope, and lots and lots of patience the chip on film connectors and buffer (driver) boards can be purchased also. Although special machines are used in the bonding process it can be done manually. There are many videos to explain the basics the specifications and instructions are on the web if you look. Any reasonably intelligent person who is Handy with electronics can do it. Have fun!
So basically, you are recommending to take a soldering class, purchase special equipment, and source hard to find parts to repair a TV that isn't worth more than $200. 👏👏👏👏👏
Good morning sir First I thank the good job u sharing with us. Sir I have a problem with my sony tv (40CX520), the screen is mostly white n red on top. What can I check in order to fix it?
Hey big dog! Hi have a Samsung led and one solid white bar with no picture. Everything else works and has video, just one vertical white bar about 6cm wide. Would this be the T-Con or bad panel?
bigdog8882 I have re seated the ribbon cable and still same issue. Will try to do some more trouble shooting tomorrow. Thanks for reply! All the way from Australia
Hey what up bigdog,i enjoy the vids, but have you or anyone done repair vids on tv combo units? I have an rca 22la45rqd,and the original problem was volume control issues so I replaced the mainboard,however being that it took some time to find the right board I forgot to take photos of how the cable from the TV to the mainboard was plugged in,and where the 2 sets of wires were attached to the power card over the dvd player. I haven't found a schematic or a service manuel to finish the this repair could you please help?
Oh damn!!! I did sprayed something few days ago, and now i see some horizontal lines, and at the top side of the display some other horizontal lines are blinking. The whole thing repeats every 3-4 seconds. The point that i sprayed is exactly at the side where the controls are located bottom-right.
I replaced my tcon board on a Samsung....the new new tcon board didn't fix it. Still audio and no screen. Backlights there. New Tcon board only has two lights lit up . Any other suggestions? Removing the ribbons on tcon board does nothing
So if I was just replace the t-con board that wouldn't fix the problem obviously?? How to solder but I'm not really good I'm not really good using a voltmeter but I know how to replace the parts with new ones but that have been easier and save time??
Hello sir nice vedio i have a similar problem but on t-con board i remove the shorted capacitor and did not put in any i leave it just like that and it started to play ok ,is it all right to do that or it will give problem shortly.
Your video helped me a ton, BigDog. I had just replaced all the backlight LEDs on a 55" RCA television, using your videos as troubleshooting guides. Once the backlights were working, I all of a sudden had no picture. I suspected the T-Con board and did some in-circuit testing of surface mount capacitors, after hearing you stress that they can be a real problem. I found that several were showing a short, but I knew that they were connected in parallel, and that most likely only one was the culprit. I noticed that one of them seemed brittle and my test lead would kind of chip away at it, while the others were not brittle. I removed that suspect cap with hot air, and low and behold, I got 12v back, whereas before there was a very low fluctuating voltage. The picture works now and I'm very happy, as I am working on this TV for my uncle and was really hoping to save it. I have the exact same TV that I'm currently using as my computer monitor, and it's been a great set. I do plan to replace that bad capacitor, or I'll just wait for the new T-Con board that I had unfortunately already ordered. Thank you sir!
You crushed that demo! Thank You for taking the time to record this and demonstrate your diagnosing skills and walk away with a legit fix! I am much more informed now! Thank you!
As someone who does cellphone repair and tv mounting for a living, one technique I’ve found incredibly important to avoid stripping screws is to first go in reverse and you should feel/hear the screw skip itself into the hole and then it will go straight in. Especially important on iPhone repairs.
Yes, man! All my life I have been using this technique, I came to it myself. And this is the first time I meet a person who does the same! Delight and respect!
@@fixingmania I too discovered it myself through my own practice/experience. Cheers!
Electronic technician is a very hardwork. And patience..man
Respect to you sir. Godbless
bigdog8882, I watched this video last night after being given a 42" LCD with working back lights and sound, but no picture. Most video's on the subject are pretty much repeating the same information over and over, I'm not saying it's bad information, but there's some key things you need to know in certain scenarios and they don't always explain that properly. The one key thing that brought your video to my attention was when you found the short across the capacitors in the T-Con board and you then took the time to explain that when you disconnected the panel strips from T-CON the short was no longer present on the T-CON. This led you to check for shorts on panels own circuit. You also took the time to remind us that no capacitor should have negative on both sides. That is what resolved my issue. I ended up replacing 2 SMD capacitors on the panel with my soldering iron and a magnifying glass on my living room floor. I now have a 1 yr old 42" LCD and it was completely free! Thank you sir, good advice :-)
In my case, it wasn't water damage. 4 capacitors on the driver board tested as negative on both sides. No obvious signs of damage, heat or any of those things, it was just simply a blown capacitor. Obviously I didn't know which one it was, so I started with the one nearest the strip connector. When I removed that capacitor I tested the other 3 remaining on the board that were in short circuit and they were still in short circuit. I removed the next capacitor and retested and this time the remaining 2 capacitors tested correctly with no short circuit. So I just replaced the 2 capacitors I removed with some I recycled from my scrap pile. That was it, job done!
Bro....this was just what the doctor ordered.. you're alive saver...had the exact same problems..wow..cheers from Miami Florida
You are just incredible!!! Thank you so much for all the help, followed your tutorial and just fixed my TV after looking for a solution for days! My only doubt it's if I can replace the SMD capacitor for one that looks exacly the same or if I need to look for a certain one? Thank you once again!
If your referring to the little brown or tan smd capacitors; then YES, u can use one thats the same size.
Thank you, I bought a 10uF same size, already replaced it some days ago and it's back on work again ❤️
I ABSOLUTELY LOVE YOU.
I was going insane with my TV. Replaced every board and still no picture.
I was ready to call it quits. Watched this video and got a second wind of hope. Replaced one teeny tiny capacitor and it works again.
THANK YOU SO MUCH!!
Best video on TV repair I came up on in 3 hours total of scouring you tube
This is a great video of troubleshooting a T-Com board and capacitors!! I appreciate BigDog8882 sharing his process and his passion! Please keep up the great work BigDog8882!!
Also, I like to see people saving the landfills by fixing these TVs! How many other TVs have been thrown out because of an easy fix?
Superman Glasses? LOL I need Superman's grandfather's glasses. I LOVE the in the trenches reality you show rather than editing out all that like most do! Good Man! Thank you! God's work comes through good people!
Got the same problem with a TOSHIBA 40L3451DB, I originally thought it was the tcon board but it doesn't have one, after watching this video I'm going to strip the tv down a bit more & check around the driver boards. Thank you for the video , very useful information .
thank you for posting this video, i know its difficult making videos esp on a complex subject that you make sound simple, thank you
Impressed with your soldering skills! Great work! Currently have a LCD computer monitor that's suddenly gone blank - seems that a similar process might be going on (sent it back to ACER and they want £800 for a new panel - a new monitor would be about the same!)
Sometimes I don't understand people. 325K Visual and only 2.66K thumbs up. OMG disappointing (for me)...come on man...let's cheer up...
On the other hand, (14:56) I have a SMD990. Reliable (in/out) of the circuit. Price versus function ratio in favor of the technician... I didn't leave the link so as not to violate any channel rule. Excellent video to train technicians in fault detection. Thank you very much for sharing sir.
Just wanted to thank you for this video. i picked up an LG 55LN5600 for free that someone had tried to repair. It had 3 LED's out and I replaced them so I had back lights but no picture. Checked the Tcon and fuse was blown and no apparent shorts to ground. Replaced fuse and now have TV up and running.
Great job getting that telly back up and running! I do not have good soldering skills. I do have a question though...I was given a Hitachi 39" 720p TV that I was going to use as a computer monitor. It powers on, including the backlight, but has no picture, menu, or sound. Suspecting the EEPROM chip, but lacking soldering skills, I replaced the mainboard. It's an all-in-one board -- power supply and T-con. The screen has its own driver boards. Replacing the mainboard made no difference. Backlight, but no picture or sound. That's baffling to me. If the screen/driver boards were bad, I should still have sound. The speakers have a completely different connection on the mainboard. Would a bad video driver board prevent the speakers from working? I tried disconnecting the video driver board completely, seeing if I could rule it out. Or should I contact ShopJimmy, where I ordered the replacement mainboard, and RMA it. Is it possible I got a bad board?
Bad LCD Panel.... You probably don't have sound because you don't know what input the TV is on if you cant see any image on the screen. You can try the Tape method. You Tube "Frugal Repair"
I have a TCL with backlights and no display. I replaced both the power supply and main board. There is no TCON, so I think the problem is on one of those scaler boards along the bottom.
So easily pinpointed the defective parts very helpful for the beginners. Thank you Sir
Thank you so much, very helpful, man! Keep it up, Big Dogg, droppin' knowledge on the masses...The Tutor Of TCon Troubleshootery!
No problem, thanks for watchin Jericho!
Nice! Good job! Well explained and will really help a lot! I also like how you explained how the problem happened (sprays)Thanks!
That was impressive. Don't think I have that problem but was still interesting to watch.
Thanks big dog just fix a 60 inch Vizio 4k that had a bad capacitor in the buffer board I just checked it like you said and id worked, keep up the good videos.
Awesome video sir!!!! Similar symptom on my smaller TV, but structurally, not applicable to it at all. I still watched it through, and saw that you killed the main video board by bridging an open fuse with the power on....haha!!! But we all make foolish mistakes..... In fact, I once had an electronics teacher tell us not to EVER replace a fuse until you investigate why it blew in the first place. I’m probably worse than you at mistakes though. Anyway.... my respects!!! Thank you for this video Sir. Very informative.
Love the old camcorder lmao! Smart guy! Definateley gave me some pointers in my tv fixing! Thank you buddy! Awesome video!
Love your detailed troubleshooting technique. Got a free 47LG70 LCD...trying to fix with similar problem.
Fixed one week with similar shorted cap, only there were ten caps, in parallel. Got lucky and one of the first two I removed was shorted.
Picked up a free LG 65 inch TV with sound and backlight. Went through all the troubleshooting and checked all the parts. Even tried the baking of the mainboard to no avail. Got tired and ordered a repair kit from someone on eBay with over 1K sales and 100% good feedback. Guy showed pictures of working TV with busted screen. The parts were what I need so I bought the kit which includes mainboard, tcon, power board and even two extra cables. I replaced Tcon, mainboard, powerboard and then the cables, test it out one at a time. Nothing worked. I removed the ribbon cables and even slightly clean and reseating them. What else could it be? Thanks!
Great Video. Try getting a 2nd camera to do the angle 90 degrees so we can see you when you're working. Have a PCMonitor Dell SE2717H. White Horizontal lines on a black screen where the clean message ought to be (Dell self-test - only power cord plugged in). Caps on power board all look good. Opened up the TCon panel. Everything is so incredibly small on a very long and narrow circuit board. Do you have experience fixing this Monitor? Thanks.
Damn this was helpful. Almost replaced my t-con board before following the short to the panel board. Easy and cheap fix too. Cheers
Great video, great fix, great explanations. Simply hardcore legit repair by a Great Humble Man. God bless & Subscribed!
Yup, useful video with wise precautions. I know I won't be changing fuses without checking for shorts first.
very intuitive. Got a Dell 2210f monitor that has faulty panel. Will look ad driver board and check caps. The power board protection cct kicks in 1 to 2 secs after power-up - image and backlight can be seen during this short period.
Solid work, love the troubleshooting steps. One question, why not repair the main board circuit?
Too Badly damaged
Loving your videos, you are head and shoulders above the already tall company here on TH-cam!
Thanks for this video! I have a similar situation with an Emerson LF501EM5F. I'll be checking the panel driver boards soon!
Got stuck at the tcon but no idea where to go from.there. great video, now i know how to see if its the panel or the tcon
thank you so much, this video helped me to solve my TV problem. Thanks again.
You're welcome!
How are you. Thanks for the information. My Samsung LED TV has vertical lines at the bottom of the but these lines would disappear and reappear after some time. What could be the problem
I got one too, lol. Its the screen. Most likely the driver boards or the cof's in the ribbons. Just have to watch it like that. The screen most likely is not available.
Thanks very much.
That same TV has a distorted sound which have breaks to the extend that it would be difficult to hear. What could be the problem.
@@bigomaso9855 either the source (cable or satelite box), the main board, or the TV speakers.
Thank you. Tried the capacitor trick and found the tcon to be bad. Parts on order. We'll see if it fixes it.
hello. you fix your problem?
Same issue and I changed the entire Tcon board but screen is still out 😫
Great work big dog I have a simiar issue and this was very useful to know and check tcon voltages. Thank you
Good afternoon i have a toshiba 46sl417u blue screen, no image . where should i start ? Thanks for your time
T-Con board
Interesting repair. Carried out efficiently.
Recently repaired a sammy curved 65 in TV. it had a shorted cap also. u pressing on the ribbon cable got me nervous. LOL.
Thank you for you thoroughness and for sharing this fine work dude, i learned a lot of usefull things. Cheers from France
great job sir i been fixing tvs since 1982 over 30 years now lucky burn out the driver bored how long u been fixing TVs as I started on valve sets had lots of problems wth lopts
You the man. You the man. Thank you for your help And making it understandable.
so never tested capasetors without unsoldering ones side and what did you replace never heard a comment about that
Wats up big dog i got a 47lw5600 and i did wat you did on other video.I heated up that chip behing heatshield for 3mins.Put it together and it worked enough to watch movie.Than it went to black screen again.With sound.Wat shld i do next heat it longer?
Thank you very much this video helped greatly! Wish I would of saw your video before I bought a T-con board. Had three shorted caps on the left panel board after removing two the short was gone. Tested the two I removed only one was shorted the other was good. After replacing the bar cap the Bravia KDL-55W802A had video once again. The only problem is now I have ghosting of high contrast after images. They clear once the screen is refreshed with a dark image such as a blank black screen at the end of a program. Any ideas? Thanks again. 😁
Still something on that Panel board, maybe.
I figured it out, the tcon wont produce 8.5 even when the tcon isnt connected to the panel for some reason, maybe because its a proscan tv , thanks Big Dog
Thanks for he demo. Was a big help with my video issues.
I don't know how I ended up here, wasn't searching for repair solution but I want to watch it anyway.
BigDog, I'm sure you've seen the infamous Vizio T-Con board transistor failure, I've got one here...I can't locate the part number, I've seen general specs, people are calling it an NPN, others call it a PMOS...thoughts? This is on a 70i-A3 model...thanks for any insight.
Not sure on that one.
@@bigdog8882 thanks for responding anyway.....the board is inexpensive, I'll wait till the replacement arrives. You were correct on my other question, the real culprit ended up being a bad 6 foot HDMI cable I had installed a few months back for a sound bar. Don't know why it would go bad over time, but it is what it is. Thought I had eliminated outside source as the problem, I guess not.
Great lesson! Gives me an idea what I need to look for. ☘️
Good job master repair...
I have the same issue with my computer monitor. Is it possible that it could have the same fix?
I would love for you to help me with some T-Con issues I have on multiple TVs. the pictures work find once I do the backlight change, but over time when I test them daily, they are now losing picture. All I have is a backlit screen and no picture. Can they get shorted for some reason when I am doing these backlight changes?
Great video, thanks so much. I only wish that I would of found it earlier. Driver board got wet, and I cleaned it to much with alcohol. I knew not to clean he screen, had a roof leak. Cheers
Now that was a good video. I'll have to reexamine mine
very good isolating technique great sir love your fault finding bravo.
Hey Bigdog8882, I am trying to trouble -Shoot my JVC 55 Inch LED Smart Curve TV. Model LT-55KC87 With back light and no picture. I have trouble-shoot unit I reach the T-Con board to the driver boards (This TV has 4 driver boards), however, when I remove the ribbon cable from the driver board on the left side the TV works with that side of the display blank. I tried switching ribbon cable from left to right and it makes no difference. I check to see if there was any corrosion of damage components on that driver board but can't fine any. Any ideas what can be the problem? If I remove the ribbon cable and power on it works and once I plug that cable back in the TV picture goes blank.
You have something bad on the Driver board that shuts the video down.
@@bigdog8882 Thanks for your reply. I have tested all the components on the Driver board and nothing seems to be shorted. Can it be the panel itself that is causing the short?
You need a camera man!
Outstanding information!!!!
Never.😀😀
Would you be able to tell that side was bad if you did the plug one cable in at a time on the tcon board and get half display?
Hello
Need your help please, My tv is down, when I turn it on the screen is black, there is sound, and the slab is backlit.
I checked the fuse of the t-con, 12v ok
On the other hand there are several ceramic cms capacitors are in the courtyard circuit (all the tablecloths unplugged)
The problem comes from capacitor?
If yes can we change that the capacitor cms, or t-con?
Thank you in advance
Could also be main processing board or power board too
Well done! That was very impressive. I tried replacing a T-Con borad and the fault remained (weied colours all over). What's the chances I was supplied a bad board? I think I'll give up, Happy Christmas!
getting down and dirty with it, nice fix/video and well done
Hi, do you happen to know what solution or how to fix(jumpering side cof, cof is a bit different from others that have round visible test points for easy solder) broken connection at the side cof, there are 3 cof at the side and the 3rd one is faulty having black display or black/colored lines, not the cof itself, just the panel wires connecting 2nd and 3rd cof. The side panel where the cof are located had a small crack between 2nd(middle) and 3rd(last or bottom) cof and that caused the black lines display. 1st(upper) and 2nd(middle) are both okay, just the 3rd(bottom) is bad because of the crack(lost wires/connection) on the panel. Please answer.
Thank you. Great video. Would you happen to know what size capacitor was replaced?
i have a samsung panel - about 10 years old... started looking... well.. .funny - like it was overexposed - everyone looked like their faces were shiny... i get it the tv is old and a new replacement is cheap... but i'm willing to have a bash at fixing it, if it's fixable. when do you figure out the point is, where a tv isn't worth it? would a lcd panel just go on forever or do things just finally 'wear out'? newbie to tv repair, but do a lot of diddling around with components for various projects.
Hey man, i have exactly the same problem at the same location, i don’t know if it’s water or weakness point in the board, anyways where can i find those small component .
Thank you.
Hi,
Learned something new. 😊
Thank you for your detailed repair guide.
Best Regards,
Thank you BigDog! You're the man!
Thanks for the videos! I like them. Very down to earth but you gotta quit them newports!! Haha
you've done upto component level great !!!
Very nice video great work . REminds me of a TV i could have repaired years ago.
The customer got real lucky on that one.
Very informative video! I have a 55" LED Finlux TV that just went black as i was watching it. Found this video after some searching and followed the same process of elimination. Found that same short over the capacitors on the t-con board, however that micro-fuse was not blown. When disconnecting the ribbon cable going the right driver board the short was gone. And sure enough, when powering up the TV with that ribbon disconnected i got picture over half of the screen. I see no apparent damage on the driver board, though. Is there any chance that one of the caps just went bad or should I consider this one a goner?
EDIT: Found the problem! It was indeed one of the caps on the driver board that went bad and shorted. Replaced it with one from a salvaged computer board. Cheap fix. Thank you! :)
Thank you for break down of detailed testing.
No problem!
This fix you found out about because of someone allowing liquid to run down the screen to soak the board causing a short at a capacitor might also be the issue with the Toshiba Model 57HM167 I have with white spots like outer space stars appearing behind the menu or full screen without menu and there is no audio present nor video. I will investigate where that could occur at.
I got a 2007 model Toshiba Model Number 57HM167 manf June 2007 so its not above 2009 and has no HDTV capability and that is the only antenna I have which works fine on my VISIO TV. I do have a converter for converting older model TV's so they receive digital HDTV signals changing to analog but it will not work for the Toshiba. A problem I see comes up when turned on the screen itself has many white dots on it, looks like a space broadcast of the stars but none ever change position & stays stable the entire time I am working with the menu using the new GE UltraPro Universal Remote. I do a scan for channels and none are detected using this antenna, so I believe this Toshiba is mainly for cable TV use only, not HDTV usage. I am using channel 3 for the down conversion channel operational scan and nothing being detected seems illogical the Toshiba has a antenna reception menu choice. There is no images at all just that stary outer space look behind the menu where a channel should appear. I don't know if it is a tuner issue or some screen issue causing this problem on HDTV reception using my converter from the FCC I bought back then. Can anyone help please.
Thats a DLP TV. If U got White dots then you need to change the DLP/DMD chip in the light engine. Just order it from Ebay or Amazon using your model #, and theres plenty of Video's on TH-cam to show U how to replace it. Ive did plenty of those. Common issue.
I appreciate that coming from a expert such as yourself, that was no slight miracle. I got it sitting in the living room but using my VISIO which is a small 42 inch LCD TV and it works for HDTV so the antenna on it is no issue, my mothers VISIO 48 inch LCD TV got some lemonade splashed on its front screen and it ran down into the horz-vert board so there are lines going up and down the video on my right side while left side displays OK and there is sound. One day I hope to fix its problem. I was thinking I had to buy another display for it till I saw you fix this Samsung TV.
I got two TV's both 48 inch LCD TV's given me that I relocated to the other home which will not turn on at all. Next time I go there I will get the information on them for you to see.
If you see the same comment on another TH-cam video you presented disregard, I believe you have answered my question very fairly and thanks again. I'll keep in touch, from Prattville Alabama to you.
I went to Electronic Trade School (Instructor Mr. Jones), I quit after 8 months cause the math in another class (required course) was to technical to remember at the time. A girl there named Paula Jones told me a story, she said she has a uncle that did not like Bill Clinton so much that he was willing to help her snoop him under the table out of office, he was a private eye in Washington, she went a couple days to introduction to the class of printing I also studied then suddenly she never came again, the instructor named Steven (printing class) said she probably dropped out. Well, she did never to return to the Trade School John Patterson which changed its name while I was attending the printing course which after one year of electrostatic printing machine and staple machine I ended up sick and had to end my classes, I found I was allergic to the cleaner I was using to wash my hands and arms in plus I could not breath the stuff which was a giveaway I should have paid closer attention to use lava soap instead of that industrial cleaner I learned was jet fuel.
So when the story of Paula Jones broke in Washington DC I contacted the school to attempt to get them to verify that Miss Paula Jones had dropped out of the class, they refused to tell me anything about Paula Jones saying there was no record of her ever attending. Heck, I know she did attend cause I walked in on her and the instructor in the closed closet and she was attempting to charm him and he kept telling her he was married and had a child which got her so upset that she got off the shelf she had her leg propped up on with dress pulled up and walked quickly out the back door, I said excuse me to the instructor and followed her out the back and she was standing there crying. Next the bell ran and we all were to go to the lunchroom to eat so I went with her, she sat at a table near to the instructor and I sat further back to their left, she eat then we went outside to talk at the parking lot, by chance she had parked her Vega auto next to mine and started with the story. Well, I had a story too so I gave my take on hiking to San Francisco California and back which was a blast, it had been so cold up there the snow was five feet thick but I was lucky a Greyhound bus driver stopped to give me a ride then he stopped alongside the otherside of the highway at a restaurant and said come inside and I'll buy you some coffee that he normally drove the empty bus back to Los Angeles from San Francisco and stopped there for coffee. Miss Jones did not seem as interested in me as I was in her and she got in her car and left the parking lot telling me thank you for being her friend. It was a true experience I esp remember because of the helicopter that landed in the parking lot from the state troopers whom delivered the Crime Stopper Neighborhood Watch order for us to print, cut, fold, and staple (my task I did while everyone went to eat one day). It was all done on the German large press I wanted to learn how to run but two guys were already assigned it so I got stuck with a chubby girl with glasses on the electrostatic printing machine. She was moved over from paste-up of the negatives for the camera room another thing that got my interest, the staple room was in the room where the enlarger was at for the camera to make the plates for the German Press (a huge heavy cast iron machine that required moving stacks of paper under a feeder that fed one sheet at a time and they cranked it up to finish sooner).
You do not seem to bother the subject matter with math much other than checking to see what you got compared to what you should have, but mine was paper technical nothing hands on at all both classes required math.
I hope this was interesting and that I did not bore you much. I asked Bill Clinton in a letter to call me about Paula Jones and he never did. On my way back from California I went via New Mexico, Oklahoma, Arkansas, cutting down 69 into Alabama and to Tuscaloosa then got a ride to Selma Alabama and from there a ride all the way into Montgomery before the bridge and was eventually back on my street walking down it to greet my mother and father whom had been worried about me for a week, I called home in Tuscaloosa. So when a letter from White Sands Missile Testing site arrived at home my parents knew I was telling them the truth, my father was retired USAF and I left my ID card at the base gate when I went there to buy some food inside the base exchange, the man that drive me onto the base was my ride to Oklahoma CIty Oklahoma and he had forgotten I had to leave my ID at the gate and two Security police allowed me to enter the exchange to buy food & showed them my ID, they should have returned it once we left but they returned to the gate and we drive right through it without stopping. I got to drive his car, he was a Spanish Woodworking Instructor from Chicago, Illinois whom had been in Los Angeles on some student forum and met his classmates there before it was over, back when OJ Simpson had made a football play which hit the news on the radio before the criminal incident, I guess you can recall that far back. Anyway I had my joy, can't walk that much anymore, I'm lucky to get inside the pharmacy to buy my meds cause once inside there are electric shopping carts I drive.
Love the information you are putting forth but sure wish you could invest in a better video equipment so we can more easily see what you are doing.. Have you done any videos on the Visio?
Can u do a video on a tear down and fix of the lcd back lights on an old Phillips 47” the huge and heavy one with the glass base.
I actually had 2 of those In my house. Those are really nice televisions with great sound. Unfortunately I dont have those TV's anymore and those Use CCFL tubes not Leds for the backlight.
Anyone else admiring the strong blue of this dudes tshirt
Hi, I have a Haier model # 65UFC2500 tv. I do not get a picture or sound. I do get a blue light when the power is turned on. I also hear a slight sound from the power supply when I turn on the tv. If i attempt to push any button such as menu, ch, or input the blue light flashes from red to blue continuously. I tried to look at the screen with a flash light but could not see any images , nor did I see any lights through the holes in the back or without the back panel. The main board has a red indicator light for the optical out that comes on a few seconds after the power button is turned on. Do you have any information which could help me?
Here is a challenge for you, I took out the tcon and after testing, most of the caps are shorting, I tested most of the components but I’m unable to find the short, I’m out of ideas, what do you suggest?
Thanks BigDog... I have similar prob on Toshiba 32HL67US, no picture but sound. I think I heard something pop??? So no BBall game. Not sure - do I risk buying newer t-con board (May have probs), or troubleshoot my own board? Never clean screen so no H2O damage here... at best this seems like a project for my list, probably just buy new set cause I’ll never get ‘round to getting this done. That pop may indicate something bigger. Hate to toss a good tv though. Appreciate video. Jd
If you have backlights but no Video. U can try to replace T-Con if It uses one.
Big dog please respond, same thing happened to my TV last night, opened TV up and found the crustation from water on the lower board, I cleaned it with proper alcohol, re-assembled everything and I get the same thing. It does look like one of those capacitors blew out. Should I replace t con or do what you did in this video.
Where was the water corrosion ? Which Board. T-Con or Driver board?
@@bigdog8882 driver board
I have model number 60ln5600 LG
@@petermcdowell63 Well, U got water damage so its hard to say, You have to test the capacitors in the Vid like I did. Its a good chance that theres something bad on the driver board. U can try t-con, but dont give your hopes up.
@@bigdog8882 lol my Hope's are high after watching your video, I absolutely love this TV and dont want to junk it. My next step is to try to locate driver board and t-con board. And find a shop who knows what there doing. Thanks for the quick response, you da man 👊
i had a problem with my kdl-60nx810 sony I couldnt determine weather the tcon or the mainboard is the problem. i tried removing the cable that goes to the mainboard and the tcon still has the supply then I turned it on, then the screen turns to like color mode testing which displays color such as red green blue and gray and some shadowing. now I'm confused which one to change the mainboard or the tcon.
Excellent demo sir thank you very much same problem i will try.
that is very nice!!! i have TV got the same prolem. you can hear the sound but no picture and the back lights there are fine...you just see the blue screen only...how can i resolve that problem?
Hello great video helped me a lot! I if a Samsung un40ju6500 no backlights or picture even with flashlight test the led lights come on when I disconnect cable from main to tcon but still no pic inreplaced tcon and main still nothing. Because your video I believe it's panel some of capacitors are beeping quite a few actually. A m I correct? Btw shows no water damage.
On the tcon, pull out the ribbon connectors (going to the panel) one at a time to if the screen lights up. If so, then U have a bad LCD panel and you can check for bad components on the panel driver board. (The one thats bad).
Panel is not shot as he says if the driver board or cof is bad. Nowadays the driver board can be replaced with the proper equipment anziotropic, or Z axis film, special remover for the tape , a T bar soldering iron, a microscope, and lots and lots of patience the chip on film connectors and buffer (driver) boards can be purchased also. Although special machines are used in the bonding process it can be done manually. There are many videos to explain the basics the specifications and instructions are on the web if you look. Any reasonably intelligent person who is Handy with electronics can do it. Have fun!
So basically, you are recommending to take a soldering class, purchase special equipment, and source hard to find parts to repair a TV that isn't worth more than $200. 👏👏👏👏👏
Good morning sir
First I thank the good job u sharing with us. Sir I have a problem with my sony tv (40CX520), the screen is mostly white n red on top. What can I check in order to fix it?
Hey big dog! Hi have a Samsung led and one solid white bar with no picture. Everything else works and has video, just one vertical white bar about 6cm wide. Would this be the T-Con or bad panel?
Most likely a bad lcd Panel. But you can still reseat the ribbon connectors (from T-con to driver boards) just to make sure.
bigdog8882 I have re seated the ribbon cable and still same issue. Will try to do some more trouble shooting tomorrow. Thanks for reply! All the way from Australia
great video you really know your work and explain it very well,,,thanks for all you do
I appreciate that!
I need help with a 75 inch Visio tv. I have replaced all three boards in it and still not getting a picture.
Hey what up bigdog,i enjoy the vids, but have you or anyone done repair vids on tv combo units? I have an rca 22la45rqd,and the original problem was volume control issues so I replaced the mainboard,however being that it took some time to find the right board I forgot to take photos of how the cable from the TV to the mainboard was plugged in,and where the 2 sets of wires were attached to the power card over the dvd player. I haven't found a schematic or a service manuel to finish the this repair could you please help?
Hi bigdog8882 When is a vertical black line almost in the middle of the left side?
Is un60fh6003f t con BN96-28944A, where is a volts?
Oh damn!!!
I did sprayed something few days ago, and now i see some horizontal lines, and at the top side of the display some other horizontal lines are blinking. The whole thing repeats every 3-4 seconds. The point that i sprayed is exactly at the side where the controls are located bottom-right.
Where can i book an appointment with you ?
I replaced my tcon board on a Samsung....the new new tcon board didn't fix it. Still audio and no screen. Backlights there. New Tcon board only has two lights lit up . Any other suggestions? Removing the ribbons on tcon board does nothing
So if I was just replace the t-con board that wouldn't fix the problem obviously?? How to solder but I'm not really good I'm not really good using a voltmeter but I know how to replace the parts with new ones but that have been easier and save time??
Hello sir nice vedio i have a similar problem but on t-con board i remove the shorted capacitor
and did not put in any i leave it just like that and it started to play ok ,is it all right to do that or it will give problem shortly.
Its there for a reason. Take Ur chances.