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Plasma TV keeps shutting off - LG 50PN6500
Hello,
ANSWERS:
"Hi @teh_beatman ,
To me there seems to be heat discolouration showing on the board in the 3rd image down.
The one with the silver heatsink with the ""rework"" sticker on it. Up the top end, right side, between the large capacitor and the next capacitor down and to the left of the small cable that connects the two boards together.
It may just be the light when the picture was taken as it is more noticeable in the 3rd image than in the 2nd image down showing the same board area
I don’t know the answer but here’s the service manual for the TV, that may help as it has the schematics. It is free but awkward to use online as you have to change the page number below the document and click Go every time that you want to turn the page. To download the manual you have to register with the website.
Hopefully a start."
For me it was diode D400 (BAW56) on main AV board - near SPDIF above LDO actually as mentioned before. When heated it goes open circuit, after replacement TV is working fine again :) . Based on schematic it is something to do with CPU reset circuit.
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