[SOLVED]820-2915 weirdness

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Board has very weird behavior.
It did not had green light initially. Changed the IO board. That fixed it.
After some days of sitting I could not get green light again so got out the board then I could have green light.
So I checked the flex cables and came to the conclusion that there is something with the battery led flex. When it is not connected everything is okay.
Tried with another one. It works but if I try the old one and then change it to the new one it will not get green light always.
So I was thinking could it be something else on the board?
Checked connector with microscope. Visually looks fine.


The BIL cable themselves can be problematic, especially when liquid-damaged. Replace BIL assembly if it's causing issues. Pretty common.
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