I like the l how you get right to the point. To many videos by others they just talk for 20 minutes before getting to the point. Well done sir. Thank you.
You can fix these with rigid foam window weatherstripping pads (experiment with various diameters). Stiff enough where its not too spongey, and once the bezel is put back on, it creates enough force to securely wedge the cable back to the board. It does work and I fixed one I got 6 years ago, still works. When you are poor like me and cannot afford a $750 HDTV, and get that same $750 HDTV for $60-$85, this is what you have to do.
This video is great! I am not really much closer to fixing my TV. But since it is the exact situation I have and my TV looks fairly similar from the inside, I am confident that what you are describing is my issue. And as someone who knows a thing or two about tech (however 0 about TVs unfortunately) that is worth much more to me than some crappy video preaching expensive quick fixes. Thanks!
Follow up question: Is it save to operate an LCD while the cover is off like you did? At this point I don't care about breaking the TV anymore, but my own safety is still important to me, haha.
dude you're a fucking genius!!!! I fixed my TV exactly by constantly rubbing slowly those ribbons and applying a bit of heat from a blow dryer to re-liquify the glue and it stays!!!!
So, really cool thing about the conductive adhesive bonds these panels use for that stuff. This dates all the way back to even dot matrix displays. The way how that adhesive works is it conducts under tension. When not under tension, it is no longer conductive. It's not necessarily a matter of the glue itself becoming "unstuck", but rather, the chemical structure of the glue in one particular spot (or many) has been altered, as it is no longer under the correct amount of tension to conduct electricity. Think something like a chain. When under tension, a chain is strong and it is capable of linking two moving parts together. When that tension ever so slightly changes, that is no longer the case. These conductive adhesives work a lot like that. The difference is, the chain is molecular. The adhesive is still sticky, it is still doing its job. But somehow, some way, the molecular structure has been altered and it is no longer electrically conductive. This type of adhesive bond is extremely similar to what is used in silicon dies, to electrically attach the die to an interconnect. The big chips we're all used to seeing are actually significantly smaller, the die itself is very tiny in comparison to the big chip packaging they are placed into. Adhesive bonds like these are sometimes used to attach micrometer diameter wires to the package interconnect, which is what gives a DIP for example the leads you would slot into a socket, a QFN the edges to surface mount to a board, or even give a BGA the pads underneath the package to accept solder balls. It IS possible to fix these cables, I've seen it done on iPhone LCDs in a process where a new cable is attached to the panel. The way how these specific cables work on many TVs and displays is they are bonded the same way at the panel AND the board substrate. The trouble is, I don't think anyone makes tools to service the cables on anything larger than what you might find on an iPhone LCD or OLED. If they did, it would certainly be possible to restore the connections on these cables and fix them long-term.
total legand rung a tv repair guy that told me the screen was fooked which i knew was bollocks coz when i got it had 3 then got it home didnt have any then moved it up stairs 1 appared after doign this and cleanign the ribbions with a rubber no more lines !!!! have to say total legand for this thanks a bunch :)
Thank you! This fixed 10 of the 11 lines i had. But theres a blue one than wont go away. My lines were all different colors. Few red, few blue, few green, a couple black. Can you tell me why this particular one wont go away? Didnt i press hard enough? Should i tape it down.
Tks Bud After all the posts you ve been a great help been trying to work that out. So ok has any one tried to reactivate the bond maybe with heat gun or such Curious
I tried that, only to find that any heat you put on the cable completely detaches it . On the other hand, any pressure you apply to the cable immediately gets rid of the lines, but only temporarily. Due to heat related expansion and contraction, they always come back. Longest I've gotten (by applying a pressure pad) is about a month. Yours is a good question. Thanks for commenting!
Thanks for the video - very good. A quick question do you know what causes double images on LED Samsung TV's? no one seems to be able to give a definitive answer on the cause of this problem.
According to the "LCD LED Screen Panel Repair Guide" E-book by Kent Liew, 95% of the time (on Samsung TVs) it means the screen panel is defective. He's had some success using a Panel Cut OFF Modification Method to correct the problem. Detailed info starts on page 72.
When you have screen ghosting like that, with or without the burn lines, it is an issue with the frame buffer RAM not refreshing the memory properly and allowing images to linger in the LCD's memory. Doing a memory test on the RAM to find out which one has failed, or replacing it can fix the issue in most cases.
Get any kind of heat anywhere near that COF (chip on film) assembly and the film will melt, quickly detaching the whole thing. Now, ask me how I know that...
@@nimrodquimbus912 Can't tell you. I just waved a hair dryer at it while pressing the affected area with a Popsicle stick and when I let up (after just a few seconds), the whole COF detached.
PLEASE HELP. I believe the same type of cable is burnt out on my tv. The lines use to be pink and barely visible but when I turned it on today it’s solid black. Do I just replace it or clean it off? I’m not sure what to do.
Generally, TAB/COF assemblies don't burn out, they simply become unstuck. As they're not something DIY's can reglue or replace, all we can do is try to reconnect them by applying pressure pads to the contacts, which is not always successful. Even when that works, it's a temporary solution at best.
Loads of black lines like this have appeared on my Samsung 4k tv just now after cleaning the screen, on each side of the screen and I'm freaking out. Afer seeing this video, I will be able to get the TV fixed and its not a write off right?
Check the connections between the T-Con board and the Source Driver boards. Most likely, the flat pack cables and / or the connectors are corroded. That's what usually causes colored, dancing, vertical lines that intermittently come and go all by themselves. It generally happens when the source driver board is located at the bottom of the display. Due to gravity, anything sprayed on the screen tends to drip on the connectors and corrode them.
Are the lines drawn on top of the menu or are they drawn behind it? If they are behind the menu, then they're not caused by bad tab bond connections meaning the display assembly should be good. If the lines are drawn on top of the TV menu, as shown in the video, then it's almost always loose tab bond connections. Evenly spaced though - that makes me suspect a T-con board problem. I'd have to check it to be sure...
Tried this and several other recommendations without success as yet. I only have ONE green vertical line, it is clearly dots running up and down. In that line there is one missing dot. Might that tell me anything? Like maybe it is the actual screen rather than anything else? Would love an answer from anyone with any thoughts on this. Thanks!
You have a bad display panel assembly and because of the way things are, there's noting to be done about it. At least you know that new boards are not going to fix this problem. If it was up to me, I'd require TV manufacturers to guarantee their display panels for 5 years (parts and labor) or, at their option, replace the entire TV. Never going to happen, though. People have been conditioned to "throw it away and buy another one." Sad comment on our society...
@@LawrencePina Yeah, the "assemble-cheaply-because-we-want-more-sales-and-money" mentality is not good for our planet either. Look at all that waste we bury in landfills or pile up as junk, right?
There needs to be some type of rubber or plastic inserts that come on the frame panels made to rest against these ribbons so there's constant even bar of pressure across the strips. I have this exact issue starting on my Samsung but after watching this and seeing other's comments, there's no point in opening it up to try and get it to go away as it will be back if I do not put some type of strip on the panel frame's inside
Same thing. You should easily be able to make the line go away by touching the COF, but not matter how you secure the cable, the line will eventually come back.
Almost anything you try will fix this problem temporarily, but heat-related expansion and contraction occurring during the ON/OFF cycle will quickly undo the fix. So, unless you leave the TV ON, 24/7, with the back cover removed, in a climate controlled environment where the temperature never changes, you're stuck. The only lasting fix would be to replace the display assembly but manufacturers have determined that it's neither wise nor cost effective to make them available.
No. You shim it with weatherstripping foam under the bezel. I did this 6 years ago to a brand new RCA fresh from store return salvage that I paid $45 for. The lines have not come back. The issue is just production defects on the assembly line, it has nothing to do with heat. If one of the workers or robots missed a dab of glue, that's the only time this will happen. It's just a fluke occurrence. I have another RCA HDTV that is 11 years old and it has no issues in the screen. Replacing the display assembly will not do jack shit because you will still have to re-glue the cables, and if it comes with the cables, they will have been done on the same assembly line as the problem TV with the same glue and production methods, so it can still have the black lines appear, but with the addition of the fact that you will have fattened the wallet of a random TV repair guy.
This one was so bad, had so many lines, that I didn't even attempt it. But sometimes, when there's only one line, you can try to fix it by applying permanent pressure. People use everything imaginable - wads of bubble wrap, wedges of cardboard, eraser material, packing tape... Just about anything will work, even just a good squeeze, at least temporarily. The problem is - heat expands, cold contracts. As soon as you turn the TV OFF, the contacts cool down and tend to separate again. That's been my experience. Other's disagree, though, so who knows?
I have a Sony Bravia KDL-46W-5100 with lines across the whole screen. Is this the panel or the t-con board? I have unplugged and plugged all the cables to and from the board. "imagizer.imageshack.us/v2/1024x768q90/922/zBcywx.jpg" photos.google.com/photo/AF1QipPHtcbZDnBAYVFQKF0odABb4YNXvEcHHK-bfKPX
This looks like the contrast is overdriven. See if you can turn down the contrast using the TV's setup/video menu. If not, search for what buttons to press on the remote (generally while or before powering up) to get into service mode. You'll certainly be able to turn it down there.
Get a heat gun or even a hair dryer anywhere near these tab bond ribbons and they will quickly peel off (all by themselves), never to be realigned and reconnected again. That's been my experience. I guess that's why no one has made a video showing how to reconnect these with a heat gun...
Yes, I repaired many times samsung's monitor using air-heat gun, but It is a temporary solution since it last more or less 1 weak to 2 months until it fails again, the flex connectors also wear away each time you heat them, and the LCD can be easily damaged by excessive heat.
An F? You feel that I failed to explain what's causing the problem? That's all I set out to do. If you disagree that intermittent TAB (tape automated bonding) ribbons are the cause of these lines, then please tell us what board or part you believe is causing them. Good grief!
I took it to the shop and the guy said $200 lol i took it home popped on youtube and fixed it in 45 min for free with electrical tape.. Thanks for the video!!!
I watched it again and he didn't say to tape it down but I'm glad you mentioned it. I was going to throw the TV away, thank you very much for the electrical tape advice.
There is no long term fix, at least not for the do-it-yourselfer. To fix TV's with this problem, you need to replace the LCD panel but consumer electronics manufacturers don't sell replacement LCD panels. Fifty years ago when I started in this business, US manufacturers we're required to provide replacement parts for at least ten years. At some point that was cut to five years, and now we have to petition congress just for the "right to repair." We're lucky to get any parts! Those we do get usually come from aftermarket suppliers, but presently, there are no aftermarket suppliers of LCD's. It's odd, because you can get cell phone screens and laptop screens, just not TV screens. At some point, maybe that will change...
Well, instead of backhanded whining, the fix is a new TV, or better yet, drag out the 150 lb. crt TV. There are 40 year old TV's still running from days before shrewd profiteers took over everything.
There is a longterm fix, you shim it with weatherstripping foam and make enough pressure on it. They will not come back. Yes it can be done DIY. You don't have to replace parts to fix them. You being in the TV repair business all you have to do is get in there with conductive glue and reattach it. It's not hard at all. Part of being an electronics repair tech is to adapt and improvise to solve problems. Those who refuse to learn new techniques are the ones that go under. There was a radio repair technician in Wisconsin that was in business for 70 years. He repaired everything from brand new Walmart car stereos, to 100 year old console AM radios. Even coded exotic car radios.
@@MrWolfSnack It is much more complicated than just sticking some glue on a cable and calling it done. The glue is not literally just "conductive", it is an incredibly strong heat-resistant adhesive which forms a conductive path under very specific physical tension. This tension re-aligns the molecular chain to produce an electrical pathway. If the tension ever so slightly changes, it's no longer conductive. This is why applying pressure to the cable "fixes" it. The necessary tension is being applied to make those particular faulty connections conductive again. This isn't a result of the glue becoming "unsticky", it's a matter of the actual molecular composition of the glue changing. Think of it like a physical chain. When placed under the correct tension, a chain is very strong and it can link two moving parts together. But if that tension changes even a little, that's no longer the case. The chain suddenly becomes sloppy, there is a lot of play in how it moves. The parts are no longer securely linked. Same exact principle here, the difference is the chain is molecular, and it's not solely about physically holding two things together. It's about being electrically conductive. It is possible to replace these kinds of flex cables. I've seen it done on iPhone panels that needed new cables attached. However, it requires very specialized equipment. This variety of conductive adhesive requires intense heat and pressure to align the molecular chain and create a conductive pathway. You can't just heat the cable and pop it off, that's not how it works. And even if you could, you'd still need the machinery needed to create the conditions necessary to make it usable again. The only reason people are able to do it to refurbish iPhone LCD/OLED panels is due to demand. Apple doesn't sell original parts en masse, so restoring an uncracked original panel to working condition by attaching a new cable is a recycling process that is seen as worthwhile. This demand just doesn't exist for TVs or other displays, otherwise I'm sure some exotic tool from Shenzhen would be available for it. Additionally, the cables are much smaller on something like an iPhone. You don't need a massive manufacturing machine to do it. A piece of equipment that fits on a workbench and is the size of a big speaker can handle the task just fine. Very different story for all the different kinds of interface sizes you'd find on hundreds of thousands of different big display panels. Displays have been using adhesive bonds like this for a very, very long time. Even the earliest dot matrix panels like on the Gameboy DMG used similar manufacturing processes to get the cables attached to the display. I don't know if you've ever heard of the "line fix" on those dot matrix panels, but what they do is they run a soldering iron over the flex. Many mistakenly believe this is "reflowing" the solder, but there is no solder. At least, there isn't any where the cable meets the panel, and that's where they're running their irons over. All this does is change the pressure and tension of the adhesive bonds on each individual connection (which are micrometers in width, mind you). Sometimes it works, sometimes it doesn't. If you think you can just get some "conductive adhesive" and somehow figure out how to properly disconnect the cable, then figure out how to precisely stick the glue down on a micrometer sized target, without causing any excess to spill over and short nearby micrometer sized connection points, then go right ahead. But you clearly have no clue what you're talking about. Additionally, radio repair is entirely different from something like displays. A transistor radio built in 1957 is going to be almost exactly the same as a radio built today. The difference is the parts will be smaller. Still hand solderable, most likely annoying, you may even need a microscope. But still totally doable for a DIYer. Fixing cables like this, though? No way. You need very specialized equipment, far more specialized than anything you'd use to fix radios.
You tell us what's causing the problem but you don't tell us how to fix it. Does the entire LCD panel have to be replaced? Or is there a way to re-adhere those ribbons? It would be nice to know, because my week-old Sony XBR-65X850C has just started displaying a 4" wide white streak from top to bottom, with a few narrow black lines inside. I'd like to know if Best Buy should just swap my TV for another new one, or if the bonding problem can be repaired at my home.
a short-term fix this is the place something in front of the tab like you said you must understand that you have to suspend that's placing a tad behind implanting a tab in between the frame
+Gina RoMineGta or you could start develop yours machine as well. My company start to doing protype and when we finshed we are be able to replace this ribbon. Don't forget that some problem was cause by a little chip on this ribbon and the only way to repair is a replace with a ribbon.
My tv is the ribbon cable but i cant get rid of them. When tv is first turned on on the left it has many lines but as the tv warms up all but 2 lines will stay on the screen.
At least you know what's causing the lines now and you won't waste money on boards that are not going to fix the problem. That was the point of the video, so I'd say you got the point! Thanks for commenting!
My tv is an Eko 42in smart is like the middle line, it's behind the screen display but it flickers. I can't really dissemble my tv by myself so idk what to do
Well the good news is that when a flickering line is behind the settings menu, it means the LCD inside the display panel assembly is fine. The problem is most likely loose connections between the digital board and the LCD. The digital board is behind the back cover of the TV. Taking a back cover off is MUCH easier than taking a display panel assembly apart. Of course, you still need someone to take a look for you, but the problem will be beneath the back cover, not in the display panel. Hope you have someone. Good luck! Thanks for commenting.
If the screen is filled with colored lines and moving shapes, then you have a different problem from the one shown here, a problem that's much harder to diagnose.
Resolution of the sending device may be too high. Try reducing it to 480p. If that works try increasing to 720p. Also make sure frequency (50 or 60Hz) is correct. Good luck. Thanks for commenting.
confirming this. Got an samsug ued46ysxxn full hd. Those ribbons are on the sides and under the lcd. The ones under causing this horrible screentearing and vertical stripes.
@LawrencePina Do you know what would cause white vertical lines that are only there when you open the menu? The TV works perfectly normal for about 12 hours or so. It's like after it gets warm or something then it starts showing lines, but only when you open the menu. The lines are going up n down from each letter in the menu. If you selected something else in the menu and the words/letters are in a different place, the lines follow them. You can turn the TV off for a few hours and it will be perfectly fine again for 12 hrs or so, then the lines show up in the menu settings. If you don't turn it off when it does that, the screen will eventually go completely black. But then it will work normal after it cools off... Idk? Thanks in advance for any input you may have about this.
Sounds like a digital board problem. I've rarely seen similar symptoms but much larger repair databases exist. To use them, paid subscribers (I am subscribed to a few of them) will need the make, model and manufacturing date of your TV. Repost with that info and someone may be willing to share exactly what's wrong with your TV. Let's find out. Good luck! Thanks for commenting.
My vizio model VL470M (LUKEHBK) only has two circuit boards - power supply & mainboard. No vertical lines when on screen display is enabled. Vertical lines on left side with video signal as well as overall pink hue coloring all video. Suggestions??
+lofty don Have you disconnected/examined/reconnected the ribbon cables which connect the main board to the LCD panel? You've almost certainly got a loose or corroded connection on one side of the panel...
If you have vertical lines, flex connection from the screen to the board can be the cause. The more likely this will be the cause if only one 1/2, or 1/3 of the screen is affected.
There are definitely quite a few crybabies here... whaaaa! wheres the fix whaaaaa! Nobody owes you a fix on here, figure it out or take it to a repair shop. This video saved me from purchasing a T-con board that would not have fixed the problem, so Lawrence Pina, I thank you Sir. I will further my research to find the best fix. Thanks again!
thanks for pointing out how the lines are created. I bought an Insignia 19" lcd tv from Best Buy this month and already I have 2-4 blue/red/white lines going down the screen right at the edge of the left side. I will definitely take it apart later as it is getting worse.
I tried to buy the machine that fixes them tabs it cost $30,000 I tried to purchase to blueprint. Sol company in Canada can replace or put new tabs on that script
Have a 58” Samsung Plasma. Solved clicking on/off with main board. I replaced a buffer E board. After powering up, I now have 1) no clicking but 2) a VERTICAL LINE in 1 spot near the BUFFER E board. I DID NOT have line before replacing buffer. I’m thinking that my ribbon cable(s) are not fastened down correctly. Your thoughts. The tv is an 09. and i’m not going to give up on it as of now!
Given the circumstances, I'd say you're right. Try reconnecting the cables. Most likely one of them is either crooked or not in all the way. For what it's worth, I've had the same thing happen to me.
They're called source driver boards. They're not generally available. Even if they were, you'd need a tab bonding machine to attach them. Search on "tab bonding machine" at alibaba.com and you'll quickly see why.
You legend you I just fixed my TV using your method perfect picture thanks so much 👍 after I was told it’s going to cost 2 1/2 thousand dollars to replace the LCD
I have an odd problem. Here it is- th-cam.com/video/js5hQHhpXKA/w-d-xo.html It goes away after a few minutes and as you can see it's only on pitch black areas. Even dark gray areas the red lines aren't there.
Lawrence Pina The lines are vertical not horizontal. Did you watch the video? It's vertical red lines but only on the absolute darkest areas of the screen and it goes away quickly. Fuckin sucks because I really don't want the TV to die. I can't afford a new one right now.
That video is so busy, I'm not able to see the vertical lines that you're complaining about. But based on your description, it sounds like the contrast might be over driving momentarily. If so, entering the TV's service mode and reducing the sub contrast a little might help.
Lawrence Pina Thanks for the tip. I will try. And the video shows it a bit better at the end when I pull up the TV's input and main menu's. Also, you can see that it occasionally will flow around the screen randomly, and there are some horizontal lines as well. Weird issue.
I don't see how impact damage could cause the problem shown in this video. Most likely you have a cracked LCD. Solution, replace the LCD, except you can not get them.
I wish you'd asked this question under one of my "MBOX Frustrated User Guide" videos but assuming the clock is set to the correct time on your TV, and assuming you've got at least a 10 mbps Internet connection to it, then the TH-cam app you have may not be compatible with the OS you have. An automatic app update or TV firmware update may have caused this. Additional app updates and firmware updates may resolve it. If not, then consider adding an external Android TV box to your system. AliExpress prices start at under $20 and there are some surprisingly good boxes in the $25 range. Any of these will play TH-cam and much more with no problem.
what about horizontal lines? i have 1 horizontal line about 3 inches from the top going all the way across the screen, after about 30 minutes of warming up the tv it fades to a green colour and almost disappears. any thoughts?
I have a video explaining horizontal lines/shapes on the screen, but most likely you're experiencing the same problem shown here, just in a less common, horizontal direction.
In other words there is no fix. You will need to replace the whole front panel which by all accounts I've found are so expensive you are better off just replacing the TV. Great information (very well done) on telling me why I am screwed. (Smile)
Ok this is a good video to discover the problem. Here is how to fix. I will post by august 17 on how to fix. I have another one to do so it will needed to be recorded.
I don't find this video useful, unless you tell me how to fix the problem. I already knew about this so there is nothing new to me, but I'm going to tell you something, You can fix this problem temporarily by using an air-heat gun and a flat steak to press uniformly on the flex contacts over the board, but that is not a permanent solution, It can works for as long as a couple of months until to fail again. By the way , all samsung's monitors SA300 series of 19 and 20 inches have the same problem.
I bought a 4k lg tv with horizontal black lines going across the bottom quarter of the screen. I fixed it with tape, narrowing it down to 4 pins on the T-CON ribbon cable. With those pins blocked it caused faint vertical line that are only visible on white or bright background colors, still pretty unnoticeable tho. Just curious whats causing it.
Clarification: I love Gritz's TV symptoms are NOT related to the vertical lines shown in the video. To prevent unnecessary confusion, different symptoms are best discussed elsewhere, but that having been said... Answer: No, I don't think the situation you describe is timing control board related. The bypass method you've successfully employed confirms liquid crystal structural failure. Most likely, the faint vertical lines that you now have indicate that you've just bypassed too many signals. Move the insulating material left or right (uncovering just a single wire) and retest until the original horizontal black lines across the bottom quarter of the screen reappear. The wire just uncovered is generally the only one that needs to be bypassed. Using a mini razor knife, notch that one wire out of the cable. Reconnect it without using any insulating material and retest. If the horizontal black lines have NOT reappeared, that's the best the LCD is going to be. If the horizontal black lines remain, you may need to bypass a second signal wire (rare). Otherwise if you still see faint vertical lines, you can try entering the service menu and turning down the sub-contrast until the faint vertical lines disappear. And, for what it's worth, you've earned my respect just for getting this far. Thank you for sharing your experience.
I like the l how you get right to the point. To many videos by others they just talk for 20 minutes before getting to the point. Well done sir. Thank you.
You can fix these with rigid foam window weatherstripping pads (experiment with various diameters). Stiff enough where its not too spongey, and once the bezel is put back on, it creates enough force to securely wedge the cable back to the board. It does work and I fixed one I got 6 years ago, still works. When you are poor like me and cannot afford a $750 HDTV, and get that same $750 HDTV for $60-$85, this is what you have to do.
This video is great! I am not really much closer to fixing my TV. But since it is the exact situation I have and my TV looks fairly similar from the inside, I am confident that what you are describing is my issue. And as someone who knows a thing or two about tech (however 0 about TVs unfortunately) that is worth much more to me than some crappy video preaching expensive quick fixes. Thanks!
Follow up question: Is it save to operate an LCD while the cover is off like you did? At this point I don't care about breaking the TV anymore, but my own safety is still important to me, haha.
dude you're a fucking genius!!!! I fixed my TV exactly by constantly rubbing slowly those ribbons and applying a bit of heat from a blow dryer to re-liquify the glue and it stays!!!!
did you have to diassemble the front frame of the tv before heating with the dryer?
@@edmondc89 yes, you have to disassemble the tv in order to do that
So, really cool thing about the conductive adhesive bonds these panels use for that stuff. This dates all the way back to even dot matrix displays. The way how that adhesive works is it conducts under tension. When not under tension, it is no longer conductive.
It's not necessarily a matter of the glue itself becoming "unstuck", but rather, the chemical structure of the glue in one particular spot (or many) has been altered, as it is no longer under the correct amount of tension to conduct electricity.
Think something like a chain. When under tension, a chain is strong and it is capable of linking two moving parts together. When that tension ever so slightly changes, that is no longer the case. These conductive adhesives work a lot like that. The difference is, the chain is molecular. The adhesive is still sticky, it is still doing its job. But somehow, some way, the molecular structure has been altered and it is no longer electrically conductive.
This type of adhesive bond is extremely similar to what is used in silicon dies, to electrically attach the die to an interconnect. The big chips we're all used to seeing are actually significantly smaller, the die itself is very tiny in comparison to the big chip packaging they are placed into. Adhesive bonds like these are sometimes used to attach micrometer diameter wires to the package interconnect, which is what gives a DIP for example the leads you would slot into a socket, a QFN the edges to surface mount to a board, or even give a BGA the pads underneath the package to accept solder balls.
It IS possible to fix these cables, I've seen it done on iPhone LCDs in a process where a new cable is attached to the panel. The way how these specific cables work on many TVs and displays is they are bonded the same way at the panel AND the board substrate. The trouble is, I don't think anyone makes tools to service the cables on anything larger than what you might find on an iPhone LCD or OLED. If they did, it would certainly be possible to restore the connections on these cables and fix them long-term.
Thank you sir i bought a 40 inch dynex for 15 dollars and with your help it was a quik fix
very good video. wished i saw this before ordering the logic board.
total legand rung a tv repair guy that told me the screen was fooked which i knew was bollocks coz when i got it had 3 then got it home didnt have any then moved it up stairs 1 appared after doign this and cleanign the ribbions with a rubber no more lines !!!! have to say total legand for this thanks a bunch :)
Quick to address the problem... I like that 👏
YOU ARE A GENIUS!!! Thank you
Thank you! This fixed 10 of the 11 lines i had. But theres a blue one than wont go away. My lines were all different colors. Few red, few blue, few green, a couple black. Can you tell me why this particular one wont go away? Didnt i press hard enough? Should i tape it down.
So what's the fix???
very good presentation
Thanks it really helped a lot :) I was able to fix my tv..... For now lol I hope what I did to it stays so I can keep on gaming
Great video, I have a vizio e70-e3 I replaced backlights but now I have a 1/4 black line with green edge... do you think it can tap ons?
Tks Bud
After all the posts you ve been a great help been trying to work that out.
So ok has any one tried to reactivate the bond maybe with heat gun or such
Curious
I tried that, only to find that any heat you put on the cable completely detaches it . On the other hand, any pressure you apply to the cable immediately gets rid of the lines, but only temporarily. Due to heat related expansion and contraction, they always come back. Longest I've gotten (by applying a pressure pad) is about a month. Yours is a good question. Thanks for commenting!
Thanks for the video - very good. A quick question do you know what causes double images on LED Samsung TV's? no one seems to be able to give a definitive answer on the cause of this problem.
According to the "LCD LED Screen Panel Repair Guide" E-book by Kent Liew, 95% of the time (on Samsung TVs) it means the screen panel is defective. He's had some success using a Panel Cut OFF Modification Method to correct the problem. Detailed info starts on page 72.
@@LawrencePina Thanks Lawrence
When you have screen ghosting like that, with or without the burn lines, it is an issue with the frame buffer RAM not refreshing the memory properly and allowing images to linger in the LCD's memory. Doing a memory test on the RAM to find out which one has failed, or replacing it can fix the issue in most cases.
Perhaps a hobby iron could be used to heat/re-activate the factory glue
Get any kind of heat anywhere near that COF (chip on film) assembly and the film will melt, quickly detaching the whole thing. Now, ask me how I know that...
Ok, cool. What temperature did it melt at ?
@@nimrodquimbus912 Can't tell you. I just waved a hair dryer at it while pressing the affected area with a Popsicle stick and when I let up (after just a few seconds), the whole COF detached.
can you told me these verticle lines are remove/repair, thanks
would that work on a tv with a gray vertical line?
.
Thanks for the help much appreciated
PLEASE HELP. I believe the same type of cable is burnt out on my tv. The lines use to be pink and barely visible but when I turned it on today it’s solid black. Do I just replace it or clean it off? I’m not sure what to do.
Generally, TAB/COF assemblies don't burn out, they simply become unstuck. As they're not something DIY's can reglue or replace, all we can do is try to reconnect them by applying pressure pads to the contacts, which is not always successful. Even when that works, it's a temporary solution at best.
Loads of black lines like this have appeared on my Samsung 4k tv just now after cleaning the screen, on each side of the screen and I'm freaking out. Afer seeing this video, I will be able to get the TV fixed and its not a write off right?
JT what causes the blue lines? Is it from use or was the tv hit?
@@Cinemagoer_64 I have no idea, the TV is only a year old. The black lines just appeared. It hasn't been hit or anything.
Is this the same for LED tvs? two grey vertical lines about 5 inches in on the left.
Unfortunately, yes. The back lights are different (LEDs vs. florescent tubes), but the screens are the same.
those lines seems to be dead black. Mine is blue and sometimes turns red and then dissapear. What could that be?
Check the connections between the T-Con board and the Source Driver boards. Most likely, the flat pack cables and / or the connectors are corroded. That's what usually causes colored, dancing, vertical lines that intermittently come and go all by themselves. It generally happens when the source driver board is located at the bottom of the display. Due to gravity, anything sprayed on the screen tends to drip on the connectors and corrode them.
@@LawrencePina What's the best way to de-corrode the connectors?
@@vigilante619 Use apple cider vinegar on the connectors. Use a soft, pink, pencil eraser on the flat pack cables.
my black vert lines are evenly spaced across the whole screen. Would it still be the same cause? or one of the other things you dismissed?
Are the lines drawn on top of the menu or are they drawn behind it? If they are behind the menu, then they're not caused by bad tab bond connections meaning the display assembly should be good. If the lines are drawn on top of the TV menu, as shown in the video, then it's almost always loose tab bond connections. Evenly spaced though - that makes me suspect a T-con board problem. I'd have to check it to be sure...
It can certainly be !
How dangerous is the "fluid" inside LCDs? Can it leak out of the monitor by any chance
Despite the name, there's no fluid in a liquid crystal display. It cracks like any other plastic. Nothing wet leaks out.
@@LawrencePina but there has to be some sort of liquid inside or not? how do you know? i dont know much about that topic sorry
Personal experience.
Tried this and several other recommendations without success as yet. I only have ONE green vertical line, it is clearly dots running up and down. In that line there is one missing dot. Might that tell me anything? Like maybe it is the actual screen rather than anything else? Would love an answer from anyone with any thoughts on this. Thanks!
You have a bad display panel assembly and because of the way things are, there's noting to be done about it. At least you know that new boards are not going to fix this problem. If it was up to me, I'd require TV manufacturers to guarantee their display panels for 5 years (parts and labor) or, at their option, replace the entire TV. Never going to happen, though. People have been conditioned to "throw it away and buy another one." Sad comment on our society...
@@LawrencePina Agreed.
@@LawrencePina Yeah, the "assemble-cheaply-because-we-want-more-sales-and-money" mentality is not good for our planet either. Look at all that waste we bury in landfills or pile up as junk, right?
Thank u
nice info; Thank you
Yes informative TKQ
what brand is this tv?
Emerson
There needs to be some type of rubber or plastic inserts that come on the frame panels made to rest against these ribbons so there's constant even bar of pressure across the strips. I have this exact issue starting on my Samsung but after watching this and seeing other's comments, there's no point in opening it up to try and get it to go away as it will be back if I do not put some type of strip on the panel frame's inside
Even then, due to thermal expansion and contraction, the problem will soon come back.
I have Samsung 5500 series 32" LCD FLAT Screen Tv that is 3 years old with MANY Grey lines and cloudiness. Can someone suggest what I can do.
Watch LCD TV Repair Secrets - Half of Display is Dark and Blurry.
This video might also show your problem: Samsung UN40H5500AFXZA LED/LCD TV Won't Turn ON
My tv Sony Bravia 55’ led vertical line problem what I am doing
Same thing. You should easily be able to make the line go away by touching the COF, but not matter how you secure the cable, the line will eventually come back.
yea I have a Samsung with a green 3-4 inch line vertically going down the screen.
Often the ICs on the flexboards have a defect. Then this way of repair won't work.
Could that apply also to the Toshiba 36G320U?
Uhhhh... So how how do you fix that?
Almost anything you try will fix this problem temporarily, but heat-related expansion and contraction occurring during the ON/OFF cycle will quickly undo the fix. So, unless you leave the TV ON, 24/7, with the back cover removed, in a climate controlled environment where the temperature never changes, you're stuck. The only lasting fix would be to replace the display assembly but manufacturers have determined that it's neither wise nor cost effective to make them available.
@@LawrencePina Oh! Okay, thank you!
No. You shim it with weatherstripping foam under the bezel. I did this 6 years ago to a brand new RCA fresh from store return salvage that I paid $45 for. The lines have not come back. The issue is just production defects on the assembly line, it has nothing to do with heat. If one of the workers or robots missed a dab of glue, that's the only time this will happen. It's just a fluke occurrence.
I have another RCA HDTV that is 11 years old and it has no issues in the screen. Replacing the display assembly will not do jack shit because you will still have to re-glue the cables, and if it comes with the cables, they will have been done on the same assembly line as the problem TV with the same glue and production methods, so it can still have the black lines appear, but with the addition of the fact that you will have fattened the wallet of a random TV repair guy.
on what
my tv is lg smart tv single white line how to rectify
i have the same problemwith my lg smart tv... did u fixed it?
I have the same problemwith my lg smart tv... did u fixed it?
Weak link in today's televisions, even for the $1500-$4000 and plus TV's.
Yea..... But how do you fix it lol
This one was so bad, had so many lines, that I didn't even attempt it. But sometimes, when there's only one line, you can try to fix it by applying permanent pressure. People use everything imaginable - wads of bubble wrap, wedges of cardboard, eraser material, packing tape... Just about anything will work, even just a good squeeze, at least temporarily. The problem is - heat expands, cold contracts. As soon as you turn the TV OFF, the contacts cool down and tend to separate again. That's been my experience. Other's disagree, though, so who knows?
@@LawrencePina thanks for the info
TRY IT IT WAS SCREEN
Lol, I don’t care what anyone says, rip the tabs I’m on my second year with my 70 inch tv.
I have a Sony Bravia KDL-46W-5100 with lines across the whole screen. Is this the panel or the t-con board? I have unplugged and plugged all the cables to and from the board.
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photos.google.com/photo/AF1QipPHtcbZDnBAYVFQKF0odABb4YNXvEcHHK-bfKPX
This looks like the contrast is overdriven. See if you can turn down the contrast using the TV's setup/video menu. If not, search for what buttons to press on the remote (generally while or before powering up) to get into service mode. You'll certainly be able to turn it down there.
Get a heat gun... problem fixer...
Get a heat gun or even a hair dryer anywhere near these tab bond ribbons and they will quickly peel off (all by themselves), never to be realigned and reconnected again. That's been my experience. I guess that's why no one has made a video showing how to reconnect these with a heat gun...
Yes, I repaired many times samsung's monitor using air-heat gun, but It is a temporary solution since it last more or less 1 weak to 2 months until it fails again, the flex connectors also wear away each time you heat them, and the LCD can be easily damaged by excessive heat.
F
An F? You feel that I failed to explain what's causing the problem? That's all I set out to do. If you disagree that intermittent TAB (tape automated bonding) ribbons are the cause of these lines, then please tell us what board or part you believe is causing them. Good grief!
I took it to the shop and the guy said $200 lol i took it home popped on youtube and fixed it in 45 min for free with electrical tape.. Thanks for the video!!!
@@robert8566 2:23 in the video you need to tape it down and the lines go away
I watched it again and he didn't say to tape it down but I'm glad you mentioned it. I was going to throw the TV away, thank you very much for the electrical tape advice.
Thank you for the video bought a 4K TV for 25 bucks with lines took a home fixed it thank you again
Right to the point. Very good explanation of the problem. +10
At least someone explained in layman way an obvious problem with all lcd panels. How much I wish people understood technology...
Great video showing the issue and so common sense now. To bad it doesn't follow with an actual viable longterm fix.
There is no long term fix, at least not for the do-it-yourselfer. To fix TV's with this problem, you need to replace the LCD panel but consumer electronics manufacturers don't sell replacement LCD panels. Fifty years ago when I started in this business, US manufacturers we're required to provide replacement parts for at least ten years. At some point that was cut to five years, and now we have to petition congress just for the "right to repair." We're lucky to get any parts! Those we do get usually come from aftermarket suppliers, but presently, there are no aftermarket suppliers of LCD's. It's odd, because you can get cell phone screens and laptop screens, just not TV screens. At some point, maybe that will change...
The only long term fix is to replace the display panel, but we can't do that because manufacturers don't make them available.
Well, instead of backhanded whining, the fix is a new TV, or better yet, drag out the 150 lb. crt TV. There are 40 year old TV's still running from days before shrewd profiteers took over everything.
There is a longterm fix, you shim it with weatherstripping foam and make enough pressure on it. They will not come back. Yes it can be done DIY. You don't have to replace parts to fix them. You being in the TV repair business all you have to do is get in there with conductive glue and reattach it. It's not hard at all. Part of being an electronics repair tech is to adapt and improvise to solve problems. Those who refuse to learn new techniques are the ones that go under. There was a radio repair technician in Wisconsin that was in business for 70 years. He repaired everything from brand new Walmart car stereos, to 100 year old console AM radios. Even coded exotic car radios.
@@MrWolfSnack It is much more complicated than just sticking some glue on a cable and calling it done. The glue is not literally just "conductive", it is an incredibly strong heat-resistant adhesive which forms a conductive path under very specific physical tension. This tension re-aligns the molecular chain to produce an electrical pathway. If the tension ever so slightly changes, it's no longer conductive. This is why applying pressure to the cable "fixes" it. The necessary tension is being applied to make those particular faulty connections conductive again.
This isn't a result of the glue becoming "unsticky", it's a matter of the actual molecular composition of the glue changing. Think of it like a physical chain. When placed under the correct tension, a chain is very strong and it can link two moving parts together. But if that tension changes even a little, that's no longer the case. The chain suddenly becomes sloppy, there is a lot of play in how it moves. The parts are no longer securely linked. Same exact principle here, the difference is the chain is molecular, and it's not solely about physically holding two things together. It's about being electrically conductive.
It is possible to replace these kinds of flex cables. I've seen it done on iPhone panels that needed new cables attached. However, it requires very specialized equipment. This variety of conductive adhesive requires intense heat and pressure to align the molecular chain and create a conductive pathway. You can't just heat the cable and pop it off, that's not how it works. And even if you could, you'd still need the machinery needed to create the conditions necessary to make it usable again.
The only reason people are able to do it to refurbish iPhone LCD/OLED panels is due to demand. Apple doesn't sell original parts en masse, so restoring an uncracked original panel to working condition by attaching a new cable is a recycling process that is seen as worthwhile. This demand just doesn't exist for TVs or other displays, otherwise I'm sure some exotic tool from Shenzhen would be available for it. Additionally, the cables are much smaller on something like an iPhone. You don't need a massive manufacturing machine to do it. A piece of equipment that fits on a workbench and is the size of a big speaker can handle the task just fine. Very different story for all the different kinds of interface sizes you'd find on hundreds of thousands of different big display panels.
Displays have been using adhesive bonds like this for a very, very long time. Even the earliest dot matrix panels like on the Gameboy DMG used similar manufacturing processes to get the cables attached to the display. I don't know if you've ever heard of the "line fix" on those dot matrix panels, but what they do is they run a soldering iron over the flex. Many mistakenly believe this is "reflowing" the solder, but there is no solder. At least, there isn't any where the cable meets the panel, and that's where they're running their irons over. All this does is change the pressure and tension of the adhesive bonds on each individual connection (which are micrometers in width, mind you). Sometimes it works, sometimes it doesn't.
If you think you can just get some "conductive adhesive" and somehow figure out how to properly disconnect the cable, then figure out how to precisely stick the glue down on a micrometer sized target, without causing any excess to spill over and short nearby micrometer sized connection points, then go right ahead. But you clearly have no clue what you're talking about. Additionally, radio repair is entirely different from something like displays. A transistor radio built in 1957 is going to be almost exactly the same as a radio built today. The difference is the parts will be smaller. Still hand solderable, most likely annoying, you may even need a microscope. But still totally doable for a DIYer. Fixing cables like this, though? No way. You need very specialized equipment, far more specialized than anything you'd use to fix radios.
You tell us what's causing the problem but you don't tell us how to fix it.
Does the entire LCD panel have to be replaced? Or is there a way to re-adhere those ribbons?
It would be nice to know, because my week-old Sony XBR-65X850C has just started displaying a 4" wide white streak from top to bottom, with a few narrow black lines inside. I'd like to know if Best Buy should just swap my TV for another new one, or if the bonding problem can be repaired at my home.
Very useful video even 5 years later thanks.
and the solution is?
A heat press with a temperature control set to 170-190C depending on the application.
And you bought your heat press where?
Lawrence Pina I use a wide adapter for a soldering iron. Just make sure your iron can use temps that low.
john a x
I do this with an air-heat gun ! It fixes the problem, but as I said before It is a temporary solution.
The manufacturer uses a COF bonding machine to adhere the tabs to the lcd, heat causes the tabs to lift. I suspect they cut corners with cheap glue.
FINALLY! An answer!! Lol Thank you for sharing. 🤗
a short-term fix this is the place something in front of the tab like you said you must understand that you have to suspend that's placing a tad behind implanting a tab in between the frame
+Gina RoMineGta or you could start develop yours machine as well. My company start to doing protype and when we finshed we are be able to replace this ribbon. Don't forget that some problem was cause by a little chip on this ribbon and the only way to repair is a replace with a ribbon.
My tv is the ribbon cable but i cant get rid of them. When tv is first turned on on the left it has many lines but as the tv warms up all but 2 lines will stay on the screen.
At least you know what's causing the lines now and you won't waste money on boards that are not going to fix the problem. That was the point of the video, so I'd say you got the point! Thanks for commenting!
Thanks to you for detailed show. Nice a day!
My tv is an Eko 42in smart is like the middle line, it's behind the screen display but it flickers. I can't really dissemble my tv by myself so idk what to do
Well the good news is that when a flickering line is behind the settings menu, it means the LCD inside the display panel assembly is fine. The problem is most likely loose connections between the digital board and the LCD. The digital board is behind the back cover of the TV. Taking a back cover off is MUCH easier than taking a display panel assembly apart. Of course, you still need someone to take a look for you, but the problem will be beneath the back cover, not in the display panel. Hope you have someone. Good luck! Thanks for commenting.
Thank you for the tip! I'm on it.
is this planned obsolecence? Or is it simply... the best way to connect the ribbons?
It definitely is programmed obsolecence !!! And Samsung's monitors are king on this !
My brand Sylvania TV is worse than this. Yikes. I have no display other than weird lines and
other shapes.
If the screen is filled with colored lines and moving shapes, then you have a different problem from the one shown here, a problem that's much harder to diagnose.
Can you tell me what I can do to my sony Wega with the picture moving horizontally? thanks
Resolution of the sending device may be too high. Try reducing it to 480p. If that works try increasing to 720p. Also make sure frequency (50 or 60Hz) is correct. Good luck. Thanks for commenting.
confirming this. Got an samsug ued46ysxxn full hd. Those ribbons are on the sides and under the lcd. The ones under causing this horrible screentearing and vertical stripes.
Same problem for all Samsung's SA300 series monitors ! Don't buy those monitors, they can't be fixed!
Do this apply to gray vertical lines as well?
Yes, it does. Try squeezing the bezel directly above them. Sometimes, that's all it takes to make them come and go.
@LawrencePina Do you know what would cause white vertical lines that are only there when you open the menu? The TV works perfectly normal for about 12 hours or so. It's like after it gets warm or something then it starts showing lines, but only when you open the menu. The lines are going up n down from each letter in the menu. If you selected something else in the menu and the words/letters are in a different place, the lines follow them. You can turn the TV off for a few hours and it will be perfectly fine again for 12 hrs or so, then the lines show up in the menu settings. If you don't turn it off when it does that, the screen will eventually go completely black. But then it will work normal after it cools off... Idk? Thanks in advance for any input you may have about this.
Sounds like a digital board problem. I've rarely seen similar symptoms but much larger repair databases exist. To use them, paid subscribers (I am subscribed to a few of them) will need the make, model and manufacturing date of your TV. Repost with that info and someone may be willing to share exactly what's wrong with your TV. Let's find out. Good luck! Thanks for commenting.
My vizio model VL470M (LUKEHBK) only has two circuit boards - power supply & mainboard. No vertical lines when on screen display is enabled. Vertical lines on left side with video signal as well as overall pink hue coloring all video. Suggestions??
+lofty don
Have you disconnected/examined/reconnected the ribbon cables which connect the main board to the LCD panel? You've almost certainly got a loose or corroded connection on one side of the panel...
If you have vertical lines, flex connection from the screen to the board can be the cause. The more likely this will be the cause if only one 1/2, or 1/3 of the screen is affected.
There are definitely quite a few crybabies here... whaaaa! wheres the fix whaaaaa! Nobody owes you a fix on here, figure it out or take it to a repair shop. This video saved me from purchasing a T-con board that would not have fixed the problem, so Lawrence Pina, I thank you Sir. I will further my research to find the best fix. Thanks again!
I have a Samsung plasma tv pn50b450b1dxza with black dash vertical lines .what the fix .
I fixed my tv. Thank you so much.
Man I love my youtubers you guys have solved many of my problems... thanks for this video.
thanks for pointing out how the lines are created. I bought an Insignia 19" lcd tv from Best Buy this month and already I have 2-4 blue/red/white lines going down the screen right at the edge of the left side. I will definitely take it apart later as it is getting worse.
I tried to buy the machine that fixes them tabs it cost $30,000 I tried to purchase to blueprint. Sol company in Canada can replace or put new tabs on that script
Can you write your mail or facebook i wanna ask you my tv problem!?
thank you so much for the explanation , it was very usefull
Have a 58” Samsung Plasma. Solved clicking on/off with main board. I replaced a buffer E board. After powering up, I now have 1) no clicking but 2) a VERTICAL LINE in 1 spot near the BUFFER E board. I DID NOT have line before replacing buffer. I’m thinking that my ribbon cable(s) are not fastened down correctly. Your thoughts. The tv is an 09. and i’m not going to give up on it as of now!
Given the circumstances, I'd say you're right. Try reconnecting the cables. Most likely one of them is either crooked or not in all the way. For what it's worth, I've had the same thing happen to me.
dude! my LCD monitor has vertical line on full screen with white shady !
how do I gonna fix it????
please help
WHat are those top boards called? Im sure those are replaceable right?
They're called source driver boards. They're not generally available. Even if they were, you'd need a tab bonding machine to attach them. Search on "tab bonding machine" at alibaba.com and you'll quickly see why.
hi sir my lg 32 inch led vertical lines shown on display how to fix it plz give me the suggestions
You legend you I just fixed my TV using your method perfect picture thanks so much 👍 after I was told it’s going to cost 2 1/2 thousand dollars to replace the LCD
and a new tv would cost $500.00... lmao did the repairman told you that also. lol
My monitor beetel company how to salve display lines problems please help me
I have an odd problem. Here it is- th-cam.com/video/js5hQHhpXKA/w-d-xo.html
It goes away after a few minutes and as you can see it's only on pitch black areas. Even dark gray areas the red lines aren't there.
Horizontal blocking generally indicates a failing display. It's a different problem than described here, but still a display problem.
Lawrence Pina
The lines are vertical not horizontal. Did you watch the video? It's vertical red lines but only on the absolute darkest areas of the screen and it goes away quickly. Fuckin sucks because I really don't want the TV to die. I can't afford a new one right now.
That video is so busy, I'm not able to see the vertical lines that you're complaining about. But based on your description, it sounds like the contrast might be over driving momentarily. If so, entering the TV's service mode and reducing the sub contrast a little might help.
Lawrence Pina
Thanks for the tip. I will try.
And the video shows it a bit better at the end when I pull up the TV's input and main menu's. Also, you can see that it occasionally will flow around the screen randomly, and there are some horizontal lines as well. Weird issue.
My baby throw the plastic bottle cap on LED TV afterwards some thin vertical lines came.what is the solution how to remove it
I don't see how impact damage could cause the problem shown in this video. Most likely you have a cracked LCD. Solution, replace the LCD, except you can not get them.
Thanks man , you are a genius
TH-cam won't work on grundig smart tv. What could be the problem and how to resolve it?
I wish you'd asked this question under one of my "MBOX Frustrated User Guide" videos but assuming the clock is set to the correct time on your TV, and assuming you've got at least a 10 mbps Internet connection to it, then the TH-cam app you have may not be compatible with the OS you have. An automatic app update or TV firmware update may have caused this. Additional app updates and firmware updates may resolve it. If not, then consider adding an external Android TV box to your system. AliExpress prices start at under $20 and there are some surprisingly good boxes in the $25 range. Any of these will play TH-cam and much more with no problem.
what about horizontal lines? i have 1 horizontal line about 3 inches from the top going all the way across the screen, after about 30 minutes of warming up the tv it fades to a green colour and almost disappears. any thoughts?
I have a video explaining horizontal lines/shapes on the screen, but most likely you're experiencing the same problem shown here, just in a less common, horizontal direction.
@@LawrencePina nice one, yeah it isnt so bad that i want to go opening the back of my tv just yet but if it gets worse then i will deffo have a look.
Thanks very much good luck
i holiday vertical Grapevine almost in the middle of my TV Vizio
In other words there is no fix. You will need to replace the whole front panel which by all accounts I've found are so expensive you are better off just replacing the TV. Great information (very well done) on telling me why I am screwed. (Smile)
You didn't pay very much attention did you?
Eh? He showed you what the problem is. Use your imagination as to how to press against the ribbon cable.
Ok this is a good video to discover the problem. Here is how to fix. I will post by august 17 on how to fix. I have another one to do so it will needed to be recorded.
COPYKATTZ28
If possible can u send me info eckcrystal@gmail.com ty
So busy I will soon
VERY Good
My tv come on I see pic but on left side is black right side is black can any bubby help
No bubby here good enough to help. I be go now.
I don't find this video useful, unless you tell me how to fix the problem. I already knew about this so there is nothing new to me, but I'm going to tell you something, You can fix this problem temporarily by using an air-heat gun and a flat steak to press uniformly on the flex contacts over the board, but that is not a permanent solution, It can works for as long as a couple of months until to fail again. By the way , all samsung's monitors SA300 series of 19 and 20 inches have the same problem.
Its actually ribbon cables too
Thank you for sharing
Would black horizontal be caused by the samething? Also why does taping pins on the ribbon cable make the problem go away?
No, black horizontal lines are not caused by the same thing in my experience. Tapping the pins works because it temporarily closes open contacts.
I bought a 4k lg tv with horizontal black lines going across the bottom quarter of the screen. I fixed it with tape, narrowing it down to 4 pins on the T-CON ribbon cable. With those pins blocked it caused faint vertical line that are only visible on white or bright background colors, still pretty unnoticeable tho. Just curious whats causing it.
Clarification: I love Gritz's TV symptoms are NOT related to the
vertical lines shown in the video. To prevent unnecessary confusion, different symptoms are best discussed elsewhere, but that having been said...
Answer: No, I don't think the situation you describe is timing
control board related. The bypass method you've successfully employed confirms liquid crystal structural failure. Most likely, the faint vertical lines that you now have indicate that you've just bypassed too many signals. Move the insulating material left or right (uncovering just a single wire) and retest until the original horizontal black lines across the bottom quarter of the screen reappear. The wire just uncovered is generally the only one that needs to be bypassed. Using a mini razor knife, notch that one wire out of the cable. Reconnect it without using any insulating material and retest. If the horizontal black lines have NOT reappeared, that's the best the LCD is going to be. If the horizontal black lines remain, you may need to bypass a second signal wire (rare). Otherwise if you still see faint vertical lines, you can try entering the service menu and turning down the sub-contrast until the faint vertical lines disappear. And, for what it's worth, you've earned my respect just for getting this far. Thank you for sharing your experience.
@@LawrencePina Thank you for taking the time to answer my question.
good explanation sir.