Game boots, works fine for a while, after it 'warms up' i lose the left inline, the top pop bumper, and the first letter L in dolly. I don't see where to check on the MPU.
(Topic ID: 132337)
check the switch connectors first. MPU J2. For busted solder joint and broken female contact.
The switch matrix diagram in the manual will tell you what specific pin to check on that connectors as well. Just match what is not working into a pattern (probably an entire column or row).
Ocala, FL
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