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LG 65UK7550 TV weird glitches and restarts

Hello,

I have problem with my LG TV - LG 65UK7550. It suddenly starts glitching weirdly as you can see in the video. Restoring to factory settings did not help. The image in the movies is fine without any problems, but user interface is glitching and sometimes unresponsive. After a while, it even restarts randomly, and from today it started to take a long time to turn on. Do you think there is a problem with the motherboard or may it be elsewhere?

Thank you very much for every answer

Update (10/27/2021)


For a long time I could not find a compatible board on the local market. I finally found this, but the connectors have a slightly different design than connectors on my board. Will it be compatible? Thank you

(photo of my board is on the left site, everything else on the board seems to be the same)

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Andrej Pracovný účet  that is one interesting error. The way I see it and can judge by your video, this is either a main board error or a LCD panel error (unlikely). Schematics for your main board are not to be found so you would need to replace it to see if that fixes it. If it does not you will have to dig deeper into the panel driver and see if there is anything that has failed. Schematics for that board are not to be had so this could lead to having to replace the screen (again, unlikely but there is always the chance). Go with the main board for now and let us know what you find.

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Thank you, I'll try to find used mainboard from damaged TV and buy it, but do you think it is more probable to be a mainboard error or a screen error?

von

I thought about the screen error and that would be the most unusual error because of the way it moves and closes the gaps again etc. If anything on the screen, it could be the board but I have not seen it go in those weird directions. Like you said, it is okay during movies and does not show this. This here "restarts randomly, and from today it started to take a long time to turn on" could be the main board.I would try a main board and see if that fixes it. I would think that the user interface data etc. is probably on an eeprom on that board. I am trying to find more information about this from my manuals but have not been successful yet.

von

For a long time I could not find a compatible board on the local market. I finally found this, but the connectors have a slightly different design than connectors on my board. Will it be compatible? Thank you

(photo of my board is on the left site, everything else on the board seems to be the same)

von

I know that this is an old issue, but after a year I was a few months ago finaly able to buy a new logicboard and now my TV works (for a few months now) without any issues. I write this just so if anybody else has the same issue.

von

@Andrej Pracovný účet Awesome. Thank you for coming back and letting us know. glad your TV works again.

von

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Andrej Pracovný účet wird auf ewig dankbar sein.
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