How can I diagnose the power board in OLED55CXPUA?
Lots of searching has led me to suspect the power board.
I have the back off, and the part number is EAY65689401... I have my Fluke in hand but I can't find any info on what to measure.
Update (02/18/24)
Thank you jayeff -- I appreciate your response.
The layout of the board is noticeably different than what I have. Is it reasonable to presume that it is another power board that works in a TV model with the same main board and the P201 signals are the same?
BTW -- my situation is that a month (or bit more) ago, the tv would hang up after a while, and once it did it would repeat more quickly until I turned it off and walked away. Lots of variations: simply reboot (a reboot usually happens; but often after a freeze of the screen or a static image or vertical lines); screen goes blank but audio continues for a while; very loud noise -- causing me to jump up and pull the plug; static noise. There is never any response to the remote. This has all gotten worse (fails sooner) over the ensuing weeks.
The screen as absolutely fine and I do not have urgency; which leads me to consider just replacing boards (power then main??) since that is fairly easy and replacements are inexpensive relative to the TV overall, or to an at-home service call. But, any diagnosing I can do seems worthwhile.
All feedback (well -- ifixit-worthy ;-) appreciated.
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