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65uh7700 flashes on and then immediately turns off

65uh7700 flashes on and then immediately turns off

My not even two year old 65” 65uh7700 TV recently stopped working. When I try to turn it on the screen flashes and then it turns back off. I thought this may be the main board so I replaced that and it seems to have had no impact

ANSWERS:

@dorgan LG’s do that with a bad power board or a bad backlight array. Measure the voltages on your power board (may have to disconnect t-con board and /or main board). Post some good pictures with your question so we can see your boards and the interconnect cables. Adding images to an existing question

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