crwdns2936637:0crwdne2936637:0 crwdns2853008:0crwdne2853008:0 crwdns2861143:0crwdne2861143:0

Repair guides and support for your LG TV.

crwdns2934591:01339crwdne2934591:0 crwdns2934593:0crwdne2934593:0

crwdns2933897:0crwdne2933897:0

Repair advice, LG 49UH620V with flickering picture

Hello

 

After changing channel, the picture on my LG 49UH620V television started doing this flicker. I tried reseting the software to factory settings, then tried leaving it unplugged over night, and still no fix. The issue is here on this video

https://youtu.be/EgCOYMZMqXg

Any suggestions on a fix? I found this fixing guide in which the guy had the same problem (from about 11 minutes, still image at 13:33).

https://youtu.be/RWD0U1N2lqQ

Does anyone have any suggestions? I'm really unfamiliar with most of the components of this TV so I'm not really sure where to draw the parallels. I've attached some pictures of my TV below.

Thanks

Block Image

Block Image

Block Image

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2853045:0crwdne2853045:0 crwdns2853046:0crwdne2853046:0
crwdns2889612:0crwdne2889612:0 0
crwdns2944067:02crwdne2944067:0

Hi, did this only happen on certain sources? Does it happen on Hdmi and analog, av etc

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

Hi. Happens on all sources (at least the sources that I have and use) as well as in all the menus.

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

crwdns2934285:0crwdne2934285:0

crwdns2933313:01crwdne2933313:0

crwdns2934221:0crwdne2934221:0
crwdns2931211:0crwdne2931211:0 crwdns2931215:0crwdne2931215:0 crwdns2934225:0crwdne2934225:0
crwdns2934057:0crwdne2934057:0

crwdns2933897:0crwdne2933897:0

@Steven Thomas Edit: Your T-Con board seems not to be inegrated into your display pane(unlike the TV in the video). I would first try buying a new T-Con board. If this doesn't work, it might be worth it to try the solution beloe

So you'll need to fool around a little bit to get the TV working. Basically what you'll need to do is put masking tape over some of the pins in one of the cables. Attached is the image from the YouTube video which shows which pins you'll need to mask off. You will either have to do this on the left or right cable, it depends on what is happening in your TV.

Block Image

The cables I'm referring to are the 2 flat flex cables coming out of the board in your 3rd picture.

Block Image

The reason this happens is a faulty T-Con board, but in this TV, the T-Con board is integrated into the panel, so you would normally need to buy a new panel/TV. However, by blocking the signals that are confusing the T-Con, you can fix the problem.

crwdns2934105:0crwdne2934105:0

crwdns2853045:0crwdne2853045:0 crwdns2853046:0crwdne2853046:0
crwdns2889612:0crwdne2889612:0 1

crwdns2944067:05crwdne2944067:0:

Can you tell me how you worked out it's those pins still? In the video he knows it's those pins because there are traces on the board connecting them (or at least that's how I think he does it) but that's not the case on my board. Or are ribbon cables pretty universal in the sense that manufacturers tend to use the same pins for the same job? Are you thinking I should mask off some of the middle lanes that connect to the chip?

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

@andrewsawesome image 3 is the T-con board "but in this TV, the T-Con board is integrated into the panel" the board on the LCD panel it the LCD driver board. The flickering could definitely be originating there.

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

Perhaps I didn't make it clear enough in my OP that it's a different panel and that's why I don't know which pins to block off. Do you know enough about Tcon boards to suggest which it should be on mine?

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

@Steven Thomas See my updated answer

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

I've seen the updated answer, and I guess I will try to get a new board, however I don't see how your answer helps me with my predicament of knowing which pins to block off. There are no pins that are connecting the two ribbon cables. I tried blocking off the pins connected via the chip but no luck.

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

crwdns2934285:0crwdne2934285:0

crwdns2934229:0crwdne2934229:0

Steven Thomas crwdns2934231:0crwdne2934231:0
crwdns2936625:0crwdne2936625:0:

crwdns2936751:024crwdne2936751:0 0

crwdns2936753:07crwdne2936753:0 3

crwdns2936753:030crwdne2936753:0 26

crwdns2942667:0crwdne2942667:0 687