Nintendo Switch power button dead

hey all. i am fitting a v5 hwfly to v2 switch and first fault was that it would no longr boot, i removed the hwfly but still no boot. checked battery and it was at 4v, plugged charging cable in and it turned on. both volume buttons still work just power button not working.
i checked a bunch of caps around m92 chip, some above usbc port and others around charging chip, all ok.
i removed the power/volume cable and checked the power button with meter and that was ok.
tried bridging the pins in the connector but still no boot.

any ideas about what to check next would really be appreciated

double check the metal cover fence area you cut out

dont see anything wrong there

Appears that I did nick a trace. All fixed thank you