Sorry for the useless thread..but I did not see that one coming tbh..

I found my old Gameboys (actually one belonged to my sister) in our attic, and I wanted to clean them up and get them running again for christmas (one as a Gift for my sis, one for LSDJ ).
Both wouldn't start up, no led or display reaction whatsoever to fresh Batteries or 6V power input.
They looked kind of ok from the outside, but after searching for a while I found some pretty "nasty" picture of what the inside might look like.
Fearing the worst (because they haven't been turned on in 16 years (give or take) I opened them up, but compared to the pictures I saw online they actually look clean, and the contacts for the batteries aren't really messed up either.

I was hoping I would be able to just find the broken part and replace it (heavy corrossion or something like that), but no dice...

My last hope, as far as I can tell, is to get my hands on some circuit plans (if that's what they are called), so I can measure each individual part with a multimeter and try to find the problem.

Does anyone have an idea where I could get that? I have also contacted Nintendo Support, but no answer so far.

If anyone thinks it might be something else, I can also upload some pictures.

Hope you guys can help me out

Cheers,