My 42 in lg tv looks just like yours did before you started touching the ribbons. Thank you for posting this. Now I know which direction to go. And if mine does the same I'm gonna try like you said to make it happy. Thanks again for posting this video. Its the only one that has the same symptoms I have.
This is very helpful Simon. Very clear visibility into the modular design of the screen. It seems applicable to many different brand/models. My LCD screen has the left half with random opaque white problem. I tried to open the cover to check inside as you do but could not. There seems to be glue holding the top cover. But just by pushing on the top cover from the front the problem is gone (until it comes back :D). So I believe it's also due to the ribbons as in your video. All I can assume now is bad contact of the ribbons which are basically signal cables. Locking the ribbons by glue/tape or replacing it with a new one may fix the problem properly. Now I need to figure out how to open the top cover first xD
Hi Simon Pitt thanks a lot for this video it really helped me a lot I had the same problem one side of the TV was blank the other side was working but still had a white line going down on the corner on the good side so I took the TV apart like you said and I use a lollipop stick to put pressure on the LCD cables and it worked this TV has been lying in my spare room for the last 2 year so I saw your RU-vid video and I thought I would give it a go myself so I fixed it my TV is a 42 inch Philips thank you so much for the video
My lg 42" is doing the exact same thing as this one. I figure it is this one mine as well.. Tv is very old in terms of LCDs so it didn't surprise me it busted. And load and behold it is the same problem you had. Little bit of electrical tape. Going to leave the case off the tv until the tape settles to see if it is fixed. Good video. I was about to take it outside and take my shotgun to it :)
This was very helpful! Good work, very detailed. Best of luck though, sorry to see that it's the panel that's bad, being that's the most expensive part to replace.
Hi simon, cant thank you enough......my lg 42" tv had the same half screen fault, going completely after month's of playing up and had sat in the spare room collecting dust till I saw your vid. so armed with a bit of knowledge and some inspiration I got to work. I only had one dodgy ribbon cable and it seemed to be the actual board causing it not to sit correctly, the board seemed slightly warped and lifting up so I used so some strips of gaffer tape to hold the board down and job done :-)
Hi Stuart, I'm glad the video helped :) Is your LCD mounted (on the wall) or on it's stand? I think the stand is awful and heavily contributed to the fault as when the TV moves it bends the chassis inside. As for the heat gun I'm not sure. What would the heat gun do? I'm not sure how it'd help. You'd have to be very careful too as if you heat the ribbons too much they could crumple/contract/shrink and completely damage the connections. Without a good reason I'd steer clear to be honest.
I managed to improve it a lot! It took some time to find the "hot spots" where the ribbon needed to be stuck down with masking tape. Once the masking tape had been stuck down solidly and in the right places the TV hardly ever played up. If it did I had cut out small grooves so I could prod the ribbon with the rubber end of a pencil. Not quite as good as new but certainly far better.
At the time I hadn't seen the reply so I stuck the actual board next to the ribbon down because wasn't sure if I could stick anything to the ribbon and also took advice from another comment and took the foam board from the front of the metal casing and placed it on top where the ribbon is. So far so good but had the same ribbon prob as you. Will let you know if it stops working again but your video was the only helpful one I could find. Thanks you have really helped :-D.
I have my sony 55 inch 4k tv having vertical lines after switching on the tv for a while. Could u please suggest if it is due to bad ribbon cables that goes to led screen form tcon
Why do you need to use a torch? Are the left and right backlights illuminated at the back of the TV when it is turned on? If they are both on then you don't need new inverter boards. Have you tried touching the ribbons around the screen to see if that fixes the issue like I do in my video?
Problem solved cheers for the detailed fault I replaced tcon board on Toshiba 46 xf model and added some masking tape and its working super good man thanks
Hi Chris, Yes I did manage to fix it. I used masking tape to stick the ribbon down to the frame so it could not move and disrupt the signal. It took a few goes to get the masking type in the right position and I did a couple of layers to make it stick firm. Find which ribbons are problematic and then try sticking them down. Please let me know how you get on. Thanks, Simon.
Hey Simon, this is a great video, I have a LG 47 Led tv and the left side is good and the right sida has all these soft lines but I still able to see whatever I'm watching anyways I found a video suggesting is the T- Con card or Board but I haven't bought it yet, you also mentioned it in here too but but the video I found didn't mention anything about left and right ribbon function coming out from the T- Con card, I learned this from you know and this small ribbons that you're touching could be hopefully my problem, I'm gonns open it soon and try what you just did and if it works im not gonna buy the T- Con card, anyway did you have any update about this video cuz you published it in 2012 by any chance? And thanks !
Thanks for this demo, I can now assume that one of my driver boards is absolutely dead. My TV (LG 60LB6100-UG) has 4 of these boards, each responsible for 1/4 of the screen. The far right shows a rainbow distorted image (garbled) and unplugging it from the ribbon chain results in that portion of the screen going pure white. That means the backlight and panel (pixels) are fine, but the driver board is toast and can't process a correct image on that part of the screen anymore :(
If u need to secure the ribbon cable then I recommend those sticky floor protectors you get from pound world. They are normally used for sticking to the bottom of chairs etc to stop scratching laminated flooring. You can get felt ones and ones made out of polystyrene type stuff. When the LCD panel surround is replaced these give enough pressure to keep the ribbon cable in place. I fixed a LG using this method and it lasted 3 years - just developed another fault whereby about three inches on the left hand edge is black when u put the set on with a thin vertical line in it. Sometimes it flashes and u can see the picture, sometimes it's mixed with some of the picture from the right so I'm maybe thinking the t-con board??? Any ideas?? I'll try and upload a video shortly.
The panel for any screen is rather expensive and not worth replacing. You can fix the tabs though (and I don't mean a ghetto repair where you just shove something on it to keep pressure on it). Basically the glue that holds the tab onto the LCD panel separated. You can reheat the glue and apply pressure to the tab while the glue cools down to fix it. Just make sure you don't slide the tab in any direction as the connections are very small and usually take a microscope or video scope to realign.
Thanks for the info. I tried it on mine and got colored lines initially then black the second time. After an hour of it being on the whole image shows fine. Can this be the controller that splits the signal or do you think it's the screen? Thanks!
I have something like this, but with a floral pattern one side. I cannot see why a jar or physical injury to the screen (if that happened) should produce a regular floral pattern. Unless liquid crystal naturally forms into floral patterns.
Hi, Are you able to replace the ribbon cables or reseat them. I suspect the ribbons are bad. I don't think the pannel is bad since you are able to touch the ribbons and fix. Hope that helps.
It could be the inverter boards that power the backlights, however I find it strange that both would go at the same time. If you look at the power board do any of the capacitors look "bloated", "expanded" or "dome" shaped? If any of the capacitors look bloated then it could indicate they are no longer working and it could be these that are not powering the inverter boards. Also check the connections to the inverter boards. Be careful here as the power board and inverter boards are dangerous.
Great work, My 42LG5010 is doing exactly the same - Left hand side only! So maybe it's a manufactuer defect (poor solder or poor quality ribbons perhaps). You've saved me a lot of time / money and effort, as was just about to purchase a 2nd user T-Con board. Do you think that blowing a heat gun (at a safe distance) over the ribbon connections would help?
Hi, It could be any of the following: TCON board AV board Backlight boards Signal cable Source device (PS3, Satellite etc.) Starting the process of elimination: Does the source device work on another TV? Does the source device to TV cable work on another device or TV? Do all TV inputs (HDMI, SCART etc.) have sound and no picture? Do the backlights work when the TV is on? Regards, Simon.
Hi Simon I had the same problem with my LG 42" t.v. After watching your video I decided to check inside and it was exactly the same. There are foam pads that run along the metal casing I just swapped them from the front of the casing to underneath the the top part so it pushed the ribbon back into place? Not sure I've explained this clearly enough but it now works, all thanks to your video!!! Thanks, you've saved me a fortune, your a legend!! Simon Phoenix
Hi. Thanks for this video. I have a different TV but it was quite useful to understand how to identifty the source of the problem. The left side of my TV gets dark/red and I just found that playing (plug/unplug/press) with one of the 4 ribbon bands from the TCON to the panel it gets ok. However when I turn the TV off and then on again, it just gets bad again. Switching the position of the ribbon bands it happens exactly the same and with the same ribbon position which for means the problem is not with the ribbons. Do you think that the problem is the TCON? Thanks
Franclim Bento it could be the ribbon ports on the panel or TCON board if swapping the ribbons does not clear the issue. Not an easy (or cheap) one to investigate as you obviously can't replace the panel so you could try another TCON board but it'll cost and it may not fix the issue if it is the panel. Good luck and thanks for commenting.
Tried this to fix horizontal white lines over centre 3rd of screen, has made a whole lot worse is it just a matter of trial, error and patience to get it fixed?
Hi, Have you tried taking the TV apart and testing the ribbons across the top of the screen as I have done in the video? This will tell you if it is the screen. Regards, Simon.
This can be easily repaired with blu-tack and a few cocktail sticks. A friend of mine lost half his picture on a 42LG3000. So I took it apart, put blu-tac under the ribbon cable on the far left with four cocktail sticks stuck in it. Hey presto, when I put the thing back together it works.
another bit of info for ya if the ribbons move the cables get weak prevent the ribbon from moving as there arnt enough screws on it to do this a simple piece of blue tack done job for me and works as an insulator too i would be a bit wary of using tape as this is liable to melt other than that great vid keep up good work 42lg3000 worked for me also telly was left out for the rubbish by unsuspecting neighbour thx for that! next time leave me a remote please!
Hi, I can't remember how I got the metal casing off. I can't remember if it was screwed or stuck down. Reason is, once I took it off I left it off. I've actually thrown it away. Sorry, Simon
I have a Sony kdl 40s3000 that is dim even though I have maximized the brightness settings. It brightens a little but quite dim. Is this the backlight or something else?
Sir i have THOMSON 42PB130S5 Intuiva(2005), when i connect DVD, Sat receiver, USb etc i get audio perfectly, but the screen doesn't display anything not even light. technicians around me don't have any idea on how to go about it. could you help me sir. actually works fine except for the screen that remain black.
Deixo a minha experiencia recente: Abrir a tv e por detraz, no topo do ecran esta uma placa que se chama T-COM. Tem um flat cable por debaixo e por de cima saem dois para o ecran; essa duas de cima troque a posição delas; depois e em segurança ligue a tv, se a imagem estiver com o defeito tambem trocado de lado então é um dos flat cable que esta danificado ! Senão podera ser da T-COM.
i had this problem on 42lg5010 for about 2 years. the left side of the picture was scrambled. started after about a year but i ignored it as it seemed to rectify itself after 45 mins of being powered on (heating up) or i would give it a nudge on the left side of the screen & it was fine. now a new issue has arisen the colours seem to be inverted on the whole screen & after about 10 mins a white misty border appears & any static image burns in really quickly. any ideas what might be causing this?
Hello. I have same model and i had speaker behind the Tv. After 5 years using this Tv, half screen gone blue... after some time the blue color turned into clearer blue, now i see everything behind the heaven blue color, but it is still there. Do you think this will fix my Tv or it's damaged by magnet of the speaker??? When i turn channel with many colors (like some channel with animated movies) the blue screen is hiding.
Buy a better tv next time or look for common faults in a tv ur looking at I got 1 dead pixel but in the description it had many people saying dead pixel so I expected it. Nice video I may need that Macy time I get a tv!!!👍😀
Hey, i have a problem with my vizio E321VL When i turn the tv on sometimes the screen is blank and in like 5-10 minutes the screen come alive but with the half left side is black but the menu and tittles can be seem on the black side Its possible that my problem is the panel too? Thanks for the video.
i have a 46 inch LED TV its a RCA MODEL IS RLDED4633A-D it wont come on but theres a red light on where the power would come red light doesnt blink stays on steady
There is a kind off fix for this, laying/taping silicone tubing across each bad ribbon cable will push on the chip on film , I've even used popcorn peanuts place the metal cover back on and the pressure makes a good connection, some report it lasting over a year already
+Eric Rotmil Hello Eric,My LED T.V is giving me a white bar in the middle of the screen.The technical team have asked to get the panel replaced and I was wondering if there is a fix to this issue.Any help to this will be appreciated.I am being troubled by my LED from past 4,5 months and I don't want to spend money on the screen.
IVE STRIPPED TV DOWN TO SAME LEVEL AS YOURS RAN ALL TESTS MENTIONED AND I CAN SEE SCREEN SAME AS YOURS(USING TORCH) BUT NO FLICKERING OR BACKLITE JUST LEFT SIDE IS DARKER THAN RIGHT SIDE SO DO U THINK I NEED NEW TCON AND BACKLITE BOARDS
Could use your help I have a 65 inch vizio M3D651SV 3d tv. It started out with 2 very thin lines one red one green and then one morning I turned it on an the right side was completely black. After awhile I would come on with those lines again. After about a month now It stays black on the right side any suggestions?
Hi Joe, Thanks for the positive feedback. We can still use the TV it just takes some time to wobble it on it's stand and get the complete picture. Not a perfect scenario but we'll see how long it lasts before the wife's had enough :) IMHO I think it's the stand that caused the fault. The stand is weak and inadequate. When the TV is moved the chassis inside the TV slightly bends. If the TV had been wall mounted I don't think this would have happened. Regards, Simon.
Hi Simon have a jvc 50 inch smart TV all the lights light up at the back but only have three quarters of the screen as black at the last quarter section tried allnew main power board picture board at bottom and all the ribbons still same nothing is loose screen it's self look perfect does have a faint line in the black section that's not working it's only 8 months old any suggestions many thanks . Paul m
I have a LG 42 inches and the half of the screen is light white meaning I still can see thru it. Any suggestions. ? I was reading that could be the ribbons
