Mega Drive 2 - No Boot Repair
SEGA Mega Drive 2
This Mega Drive 2 isn’t reading any game cartridges.
Diagnosis
The board has been jump wired bypassing a filtering coil, useless mod. Tested address line found one bit wire under the cartridge slot has no continuity. This is common as cartridge slot always get some moisture from outside. Some nearby traces has same corrosion damage.
Further, the power switch isn’t seated properly.
The repair
Removed the useless mod. Bridge the connection. Fixed the traces.
Opened up the power switch and reseated the mechanism.
Game boots nicely.
