Above is the repairing the capacitors on a Game Gear (European Model). The guide I used can be found here.
Above is an attempt to fix up my first Game Gear that I might have mangled slightly while trying to repair. Now I have learnt that slow and steady wins the race. I’ve fixed it up darned well considering the amount of issues it had / has. I still have to fix the battery bay issue with the missing terminals and the bad connection to DC power. Maybe I’ll hardware it into a power adapter? Seems a waste of an LED mode though.