2020 LG 75UM8070PUA 4K problem

[bscottjohnston]

Opinion time - anyone ever fix one of these? I just fluxed and reflowed the BGA along with some thermal epoxy on the heatsink for the logic/motherboard and the issue is still the same (refer to video attached). Anyone think this is worth the gamble buying the complete board kit from SJ? $125 gets me a PSU, Tcon and Main/Logic. "Mouse" control works on screen until the crash. Would you gamble?

https://www.shopjimmy.com/lg-75um807...air-parts-kit/

[nomoresonys]

Video didn't work for me, can you just explain what it's doing, do you want to do some troubleshooting? As for is it worth the kit, it's a big lg direct lit tv so I'd say it's worth it, most lg tvs from the last 10 years at least have usually had very good picture quality imo. You probably want to make sure it isn't something like bad led/s in the backlights at least before buying the kit.

[bscottjohnston]

Backlights work perfectly. They never go out. "Mouse" function works on screen before the screen goes blank. Thinking maybe its Tcon but I haven't fixed a TV in a few years outside of board swaps.

https://youtu.be/keY2528ysn4

[nomoresonys]

Could be, maybe try a tcon first, they are usually pretty reasonably priced. Might be some on ebay.