I have an LA37B530 with the same powerboard and it is dead. Local TV repairer told me $330 to repair as he said it needs a new powerboard so I brought it home. I am a total newb to working out what might be wrong with a TV. Can you help me please?
Cheers,
Max
Check for dry joints on the regulators. Resolder them even if they look ok. Quite common on that era.
Just thought I would add to this I had the exact same issues but ZM084 was dragging down the psu.
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