Today I got yet another Game Gear. I have repaired well over 100 of these as they commonly fail due to poor capacitors which were used during their production. They suffer from dim screens and low/no sound.
Here is the machine
The mainboard with old capacitors
Old capacitors removed, ready for new ones
New Panasonic capacitors
Partially completed capacitor install
Sound board with old capacitors
Sound board put back into the case
Closing it back up
All done time for testing!