Twilight Zone
Bally, 1993You're currently viewing posts by Pinsider falco.
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I guess it means what it says - switch matrix row 1 is stuck. Does it still happen if you unplug the switch matrix connectors? I think that'd be a valid test (others will correct me if not). If the problem goes away, there's a problem in the switch matrix, if it doesn't, the MPU has issues.
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Auckland
Fairfield, CT