Wow Thx ! Was i Lucky and Blessed , I found a 65 Samsung looked really good but no back light ,then followed your first check with an LED checker and it had back lights so i reconnected it fired it up and it Works !!! Bad connection and that was the last one i reset so you have a great guide of info here and it is well worth just buying an LED checker and Boom Pay dirt !!! Thx again May be it could happen to you all !!! JuDst do like the Big Guy says and you will be pleased with the results.
Looks like this is the exact issue with mine. I was so frustrated when I installed the new strips and they still didn't come on. I checked the diodes, and sure enough, .452 vs .220. Hopefully radioshack has this value in stock. Appreciate the competent approach to these videos. You're very good at what you do.
Nemesis Now VIII what’s the purpose of needing readings in both directions? If you have any reading of any kind in both directions, the diode is bad. Replace it. The values are irrelevant at that point.
Big dog!! What settings do you have that LED tester on? I've tried doing what you're doing, getting different readings. My 4th line ( out of 4 )is completely nothing, but i can't get them to light up like you do... that might be in another video. I want to get replacement lights and try it out
Great video, thank you! I have a different TV not turning on, when testing at the line, i'm getting 200V but then it rapidly trickles down until 170V then immediatly goes to 0. It does the same when I unplug it but I get 230V. Is it a LED strip issue or a power board issue?
My tv 65" samsung (UN65J6200FXZA) has a problem exactly as yours . I did replaced 2 diodes then it was working but only 1 minute and the screen was turning off like before I was checking 2 diodes again so it was completely bad ! I am not for sure what was going on , 2 diodes I ordered from ebay was the same number (SF2AG 2A - 600V ) is that the right one you was fixed on the video ? any suggestions would be appreciate . I just want to order new power supply board but they don't have anymore . Thank you very much .
Thank you sir, I have learned a lot from you. Can you post a link to some of the tools you're using. like that multi-meter at 14:30 point. And of course, I'd love to know what other tools you're using as well. Thanks for doing what you're doing!
Good afternoon. I have TV SAMSUNG UN65RU7100.This TV has a display problem. The TV makes sounds when I press the buttons on the remote control, I see that the led backlight is working. But the picture does not appear on the screen. I already tried to replace the mainboard and power board, but it did not help at all! You have extensive experience in diagnosing breakdowns and repairing TVs! Could you tell me what is the cause of the breakdown?
Thanks Dog! Hey a 4k tv with a separate LED driver board...how do you test those LEDs because it has like 8-10 wires going to the LEDs? Thanks in advance.
@Bigdog8882 Can you please tell me what order the (think its called) Diffuser sheets go in. I repaired the led in this same 65 inch samsung and didnt tape or record the order. There is 3 sheets total. 2 thin sheets and 1 thicker sheets. Thank you for doing what you do and sharing with us.
have Samsung UN55JS9000FXZA, i have back light on and audio but there is no picture. I recently replaced the T-Con purchased on ebay, yet it has not change. I noticed when one connect box is connected to main board, it draws power and the tv switched off and on. I need your technical advice if the tv is worth rescue. Thanks
Sir do you have a business card or a site for us to get some things repaired by shipping off to you? I have tried in my local area in south Georgia to get a smart lithium battery charger fixed, but no one wants to do through checks on the board for the diodes & resistors to get it repaired. It was a transformer that went out in it, but i dont enough knowledge to diy nor risk making further damage to the charging board. Thank you for the informative video.
Hey brother i have a 55 Samsung LCD made in nov.2010 has no back light but has a pic seen with your flashlight trick and has sound is it worth repair or trash thank you for your help… les
omygawd.... what a load of work...should everyone stay way from samsung TVs? (i know i do stay away from samsung laptops (i repair them) they are over-made, very time consuming just to open)...
My GE 32" has an issue. I turns on and shows the Quasar brand name in black & white at start up then there's a quick flash and it goes dead with no picture & a couple of times turning it off and back on again brought the picture back but not anymore. It's not a new set and is probably close to 10 years old & I was using it as a monitor. Could it be a back light bulb or strip of bulbs?
I change the one that was gettin the low reading then i try to mesure the volts on it after installing the new one and now both of them dont show any voltage🤷♂️
I have been running into a lot of Samsungs lately that would turn on/off constantly rebooting after few seconds backlight do come on for a few seconds then off. No video but sometimes get sound when starting up. If you disconnect any of the cables between the T-Con and the LCD panel. Tv will stay on with no video. Doesn't matter which cable is disconnected tv will stay on. But when both are plugged in tv shuts down and goes through a rebooting loop. I replaced main board and T-con on a couple tvs and did not make a difference. I checked for any shorted diodes and chip capacitors and did not find any on the panel. Any suggestions. Thanks
My friend has the same Samsung un65h6203afzxa we replaced the two main boards and we still can’t get it to power on. Will bad meds cause that and if so where do I buy the leds you used in the repair video? Thanks
i have led DENKA 55 smart tv DGS-55UT2SLED i changed the light strips after i powered it up i noticed that only the lower 3 strips work and the 3 strips above are not working i check the strips by tester every group take the same voltage and leds all works but when connect the power supply and check upper group take 84volts and bottom take 130volts what is the problem i checked the pwer supply with strips diconnected i found diffierence but not hight between sides and then checked the resistance of output one side reads in kilo ohms and other in Mega ohmes i tried this method i found two diodes in one chip like transistor check two sides they read same what can the cause the model of power supply is SGH5504c23-101HB
Put meter in regular ohms and make sure the power is off.... Heee Heee heee. That made me laugh as I imagine something must have happened in the past. I remember having a meter leads on amps and testing 460vac. We found the meter rotary wheel (it was a Fluke meter) in someone's pocket after the meter blew up.
I have a proscan tv that the back light not working use a light and see the picture idk what do heard it can be the power supply not working right heard could be the video board or a bad led strip but i dont have a led tester
thank you so much I'm feeling like seen the best best techer God bless you.
u r only the person that talk about this problem when u change leds and half or all of them not work thank u
You do great work, and give an amazing breakdown of the process. Thanks man, I truly appreciate it.
Wow Thx ! Was i Lucky and Blessed , I found a 65 Samsung looked really good but no back light ,then followed your first check with an LED checker and it had back lights so i reconnected it fired it up and it Works !!! Bad connection and that was the last one i reset so you have a great guide of info here and it is well worth just buying an LED checker and Boom Pay dirt !!! Thx again May be it could happen to you all !!! JuDst do like the Big Guy says and you will be pleased with the results.
This is the most useful video I have seen on the subject - thanks.
Nice Thanks for Sharing. Greetings from Venezuela electronic 2022
Bigdog, you're solid man. Your diagnosis is on point. I like your approach; very systematic troubleshooting.
Great lesson I have an 80 inch Vizio E80 E3 have back lights but no picture driving me crazy!!! Thank you for your video
I like the background music during the panel separation process.
HEy great job on explaining as you go along....great stuff for old tecks like me who is now adjusting to these new tvs
Another informative video 👍
Looks like this is the exact issue with mine. I was so frustrated when I installed the new strips and they still didn't come on. I checked the diodes, and sure enough, .452 vs .220. Hopefully radioshack has this value in stock. Appreciate the competent approach to these videos. You're very good at what you do.
Values in both directions please
Nemesis Now VIII a diode only gives a value in one direction. Kinda the point.
Yes, but a faulty diode can give readings in both.
Nemesis Now VIII what’s the purpose of needing readings in both directions? If you have any reading of any kind in both directions, the diode is bad. Replace it. The values are irrelevant at that point.
@@lostmypuzzlepiece I am with you still curious though.
Where do you get your tv schematics ?
A very interesting vidéo, you're the man ! bravo from France !
Big dog!! What settings do you have that LED tester on? I've tried doing what you're doing, getting different readings. My 4th line ( out of 4 )is completely nothing, but i can't get them to light up like you do... that might be in another video. I want to get replacement lights and try it out
Excellent troubleshooting and information video.
Great video, thank you! I have a different TV not turning on, when testing at the line, i'm getting 200V but then it rapidly trickles down until 170V then immediatly goes to 0. It does the same when I unplug it but I get 230V. Is it a LED strip issue or a power board issue?
Most likely and LED strip issue on a different TV...
My tv 65" samsung (UN65J6200FXZA) has a problem exactly as yours . I did replaced 2 diodes then it was working but only 1 minute and the screen was turning off like before I was checking 2 diodes again so it was completely bad ! I am not for sure what was going on , 2 diodes I ordered from ebay was the same number (SF2AG 2A - 600V ) is that the right one you was fixed on the video ? any suggestions would be appreciate . I just want to order new power supply board but they don't have anymore .
Thank you very much .
Thank you sir, I have learned a lot from you. Can you post a link to some of the tools you're using. like that multi-meter at 14:30 point. And of course, I'd love to know what other tools you're using as well.
Thanks for doing what you're doing!
Good afternoon. I have TV
SAMSUNG UN65RU7100.This TV has a display problem. The TV makes sounds when I press the buttons on the remote control, I see that the led backlight is working. But the picture does not appear on the screen. I already tried to replace the mainboard and power board, but it did not help at all! You have extensive experience in diagnosing breakdowns and repairing TVs! Could you tell me what is the cause of the breakdown?
Can you do more videos where you smash up a TV. That was fun and satisfying to watch.
Wondering if this is what’s wrong with my sons tv. Very faint video (visible with flashlight), good sound.
Thanks Dog! Hey a 4k tv with a separate LED driver board...how do you test those LEDs because it has like 8-10 wires going to the LEDs? Thanks in advance.
Not sure what kind of Backlights it has, but might be similar to this Video. th-cam.com/video/WCjX3qSEnJs/w-d-xo.html
@Bigdog8882 Can you please tell me what order the (think its called) Diffuser sheets go in. I repaired the led in this same 65 inch samsung and didnt tape or record the order. There is 3 sheets total. 2 thin sheets and 1 thicker sheets. Thank you for doing what you do and sharing with us.
All I can tell U is that the thicker one is always at the bottom (1st one on top of the led strips)
have Samsung UN55JS9000FXZA, i have back light on and audio but there is no picture. I recently replaced the T-Con purchased on ebay, yet it has not change. I noticed when one connect box is connected to main board, it draws power and the tv switched off and on. I need your technical advice if the tv is worth rescue. Thanks
Great Video, thanks.
You bet
Thanks this gives me another thing to trouble shoot.
nice work
I have an 82 Q60T 4k turns on/off delay on/off - no display
what could be the problem?
Sir do you have a business card or a site for us to get some things repaired by shipping off to you? I have tried in my local area in south Georgia to get a smart lithium battery charger fixed, but no one wants to do through checks on the board for the diodes & resistors to get it repaired. It was a transformer that went out in it, but i dont enough knowledge to diy nor risk making further damage to the charging board.
Thank you for the informative video.
Hey brother i have a 55 Samsung LCD made in nov.2010 has no back light but has a pic seen with your flashlight trick and has sound is it worth repair or trash thank you for your help… les
Good fix bigdog
Do you use a service manual and where do you get them.
No. U can try to Google it or Google Images, otherwise your SOL.
Im also a black American who repair tv's and I gave up doin backlights my customers don't wanna pay and it to much work but I say u good
don't be lazy leon. fix that shit
When you are in business, it's either material & labor, or one flat cost... take no prisoners, and take no lame customers.
Just where do you get the replacement LED's from
omygawd.... what a load of work...should everyone stay way from samsung TVs? (i know i do stay away from samsung laptops (i repair them) they are over-made, very time consuming just to open)...
Good job buddy
My GE 32" has an issue. I turns on and shows the Quasar brand name in black & white at start up then there's a quick flash and it goes dead with no picture & a couple of times turning it off and back on again brought the picture back but not anymore. It's not a new set and is probably close to 10 years old & I was using it as a monitor. Could it be a back light bulb or strip of bulbs?
When ever you change the diode? Do you have to change both of them or jus the one thats not good?
You can just change the one thats getting the low reading.
I change the one that was gettin the low reading then i try to mesure the volts on it after installing the new one and now both of them dont show any voltage🤷♂️
@@victorbracamontes6071 Did you change the led strips?
@bigdog8882 yes i did. Imma plug it in and see what it does.
Bigdog it work man lights are all on thanks for the video so helpfull🤘
I have a 65" with the same power supply board, with a flashlight i can see an image, no sound when start up. Can u help me out? Ill pay for ur time.
I have been running into a lot of Samsungs lately that would turn on/off constantly rebooting after few seconds backlight do come on for a few seconds then off. No video but sometimes get sound when starting up. If you disconnect any of the cables between the T-Con and the LCD panel. Tv will stay on with no video. Doesn't matter which cable is disconnected tv will stay on. But when both are plugged in tv shuts down and goes through a rebooting loop. I replaced main board and T-con on a couple tvs and did not make a difference. I checked for any shorted diodes and chip capacitors and did not find any on the panel. Any suggestions. Thanks
Its the LCD panel. Common problem. You can try the tape method.
Nice video sir
What are you using to power the led strips you are testing?
The LED Tester lites them up to get the voltage drop.
My friend has the same Samsung un65h6203afzxa we replaced the two main boards and we still can’t get it to power on.
Will bad meds cause that and if so where do I buy the leds you used in the repair video?
Thanks
@@libby1lv Just use the model # of the TV and search on shopjimmy.com, google, or ebay. Stay off those bad Meds, lol.
Great video. Thank you.
Awesome video bigdog....:-).................Can you fix my TV???
Brilliant well done BD
Nice video, @9:37,what's the normal voltage for backlight ? @10:20, what's the tool name ?thanks :)
Is that a new model LED tester? What model?
Not sure, just go to ebay and type in "led tester" and scroll down till U see it.
@@bigdog8882 - They are NOT on ebay, but Amazon has that model.
Good channel, fella! 😎
hi, if you put the flash light to the screen and see nothing what does that mean? thanks
Awesome
Hey bigdoogg What would you do if the red light blinks and the screen is blinking white like it was going to turn on any ideas.
Back lights light up blinking on my 39 inch Samsung
i have led DENKA 55 smart tv DGS-55UT2SLED i changed the light strips after i powered it up i noticed that only the lower 3 strips work and the 3 strips above are not working i check the strips by tester every group take the same voltage and leds all works but when connect the power supply and check upper group take 84volts and bottom take 130volts what is the problem i checked the pwer supply with strips diconnected i found diffierence but not hight between sides and then checked the resistance of output one side reads in kilo ohms and other in Mega ohmes i tried this method i found two diodes in one chip like transistor check two sides they read same what can the cause the model of power supply is SGH5504c23-101HB
EXCELENTE !!
I’m boutta try dis
Put meter in regular ohms and make sure the power is off.... Heee Heee heee. That made me laugh as I imagine something must have happened in the past. I remember having a meter leads on amps and testing 460vac. We found the meter rotary wheel (it was a Fluke meter) in someone's pocket after the meter blew up.
Ha Haaaa! lol
I have a proscan tv that the back light not working use a light and see the picture idk what do heard it can be the power supply not working right heard could be the video board or a bad led strip but i dont have a led tester
That's a lot of blown LED. makes me think the tv has backlight control in the menu, and it was turned up to 100% all the time.
Bet that diode didn't even cost a dollar when bought in mild bulk!
I appreciate the video, but you're always blocking the area you're working on. 😖
I know, I need a camera man lol.
Hey, but it was still very helpful. I was able to fix my TV. Bad backlights. Thank you!!
awzome
Hey Big Dog what type of LEDs do you buy?
led tv is not good compare to tube tv , after 10 years stil good condition