sweafa

could it be that the terrifying creeper in the background is Ken Whiteley? The one Raffi is singing with on that album?

yep, here! and its awesome!!!

404 😕

exactly. why is the board damaged? looks like water ingress

yes i think so, but u would have to make sure the solder will rise through the through-hole as mich as possible. maybe u can try to find the faulty pin with wiggling them separately

pressfit connections usually are very reliable. if there is a poor connection i would presume that the barrel of the via is broken and a new pressfit connector will not help. maybe putting solder in would help. did you already test for poor connections?

i would probably do some circuit with a TL431 and FETs, but this also drains some small amount of battery current.

it could be worth a try to contact diodes and ask which components use or have used in the past V-QFN2030-12 (Type HE) package

looks very similar to that: https://www.ti.com/product/TPS566235

diodes uses packages like this one: https://www.diodes.com/assets/Package-Files/V-QFN2030-12-Type-HE.pdf but cant find FMM marking there ...

unfortunately i neither could find anything. richtek has some weird packages like this:

or like this:

so i poked around their homepage. but could not find anything with that pinning. also FMM marking is not in their marking reference :(

How many pins does it have? I can't see it properly in the image. Is it 4, 8 or 12 pins?