What i’ve notice:
the power button is on the top left, and attached to the housing. it likely uses this as a ground, or a conductor. under the cable that you see beneath the button, it really might just need to be cleaned so that they make contact. the top of the ribbon can also be cleaned, as it connects to a spring inside the device which can also be cleaned (GENTLY) Otherwise, on the right side of the housing, opposite the ribbon cable, there’s a pogo pin. it and it’s mate could also be cleaned(GENYLY) although that side is probably the just the wifi antenna
Power button pad and spring:
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crwdns2934113:0crwdne2934113:0
crwdns2915270:0crwdne2915270:0
crwdns2889612:0crwdne2889612:0
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