" I know the hall sensor doesn't work mechanically "
Your the one who wrote that it might be stuck -
I can only answer based on what you write, my crystal ball is off-line and I gave up channeling into other people's minds for Lent.
Control-f for error?
Is this a PW-1?
How are you pressing a ctrl-f?
When, what, why . . .
https://www.mobileread.com/forums/sho...d.php?t=272087