Xenon
Bally, 1980You're currently viewing posts by Pinsider phishrace.
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Rebuild connectors J4 on CPU board and J4 on SDB. That where the four solenoid select lines are. When they get confused, you see things like what you're seeing.
https://www.pinwiki.com/wiki/index.php?title=Bally/Stern#How_the_Solenoid_Driver_Works
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Newcastle, OK