I got a broken gameboy printer off ebay for a few pounds. i resoldered all its joints and cleaned it with vinegar and alcohol.
that made the light come on, but the link port was badly damaged too. i managed to fix it by prying all the pins into the right shape with a pair of pliers and squeezing them around a folded up piece of a ripped up Something For You card.
we were in a pawn shop just before new lockdown, and they had a gameboy camera for sale
— chee (firstname.lastname@example.org) 2020-11-18