Update!

The Model 1.2 is all clean! Gave it a nice bath and it looks new aside from a few scratches! I opened it up and there was a crushed Q-Tip inside but everything looks undamaged,

Working on the cartridges now while I am waiting for the reset button to whiten. https://twitter.com/noahjmead/status/1294379707224350720

Also, the Sonic cartridge has "Hollywood Video" engraved into the back omg

Update 2: The v1 Genesis has been completely cleaned but for whatever reason it still won't turn on . I checked the board in its entirety and nothing is broken or corroded. It actually looks surprisingly clean for its age and how poorly it was stored. I hope it's just the cable.

Update 3: I just opened up the Model 2 Genesis and it's filled with dirt! This one is gonna need a super deep clean!