I absolutely adore the Game Boy modding scene that’s exploded in the last few years. Case overhauls like this or the Boxypixel slab pictured in the article, numerous backlit high-res IPS screen replacements, mods to improve sound, Li-ion battery packs with USB charging. And that’s to say nothing of Analogue or the MiSTer project, creating full FPGA reimplementations of the hardware. It’s a really cool example of what…
Sadly the original hardware is slowly degrading over time. Nintendo DS lite screens for example are all yellowing at this age. Buttons suffer too, my gameboy color is just a paperweight now because the buttons hardly register a press. Maybe these issues can be repaired but I’m not skilled with a soldering iron which is a big requirement it seems.
All you'll need to do to fix a GBC with stuff buttons is open it up (requires a tri wing screwdriver, $2 from eBay), clean the button pads with a q-tip and alcohol.
The pads in question are the black bits on the back of the rubber immediately underneath the button, as well as the circular copper traces on the board that the black bits come into contact with when you depress the button.
You might need 3 or 4 q-tips. You'll know when you're done because the q-tips will stop turning black.
Takes 10 minutes overall and is only slightly more technical than wiping your arse! Don't be intimidated!