Hello all,
I picked up a Space Shuttle last night that won't boot. The mpu display shows a 7, which PinWiki identifies as:
"System failure. Occasionally, the following components can contribute to this problem: U21 (4MhZ crystal); components in the IRQ circuit; broken leads on C9 (22uF) in the reset section; loosely seated ICs on the CPU board"
Any thoughts on what I should check first? I've hear bad or poorly seated ROMs can cause this problem.
Maybe worth noting, this game spent a year in a garage that's not climate controlled but played fine before that.
Thanks,
Collin