Hi folks - I'm getting a "Card Whiz" working again after years of sitting (who knows where), and I've cleaned and de-gunked the steppers, drop target assemblies and score reels. There was some funky re-wiring on the coin door, so that no power was going to the replay button, but that's sorted out and after a few more troubleshooting sessions, the game almost starts. When I press the button on the coin door to start a game, it goes through the start-up procedure (which I'm a little unclear about) - the score reels zero out nicely, and then the AX relay, instead of disengaging, stays engaged and the score motor just keeps churning.
I'm sure at some point, something is supposed to de-energize the AX relay, but I can't figure out what that is by looking at the schematic.
Other than the coin door, all wiring looks original and un-messed with. I've been going through all the relays and score motor switches, cleaning and gapping them, hoping to stumble onto the culprit, but so far, no luck. Any folks out there with more experience have any ideas? Howard R....you out there? I've used your jumper troubleshooting method to great effect so far, but this one's got me scratching my head.