Newest addition has a startup issue. Here’s what’s happening:

Power on and credits on credit wheel. After pushing start/credit button on coin door the score motor runs, the score reels reset correctly, ball count unit goes to ball 1 and the outhole kicker kicks the ball into the shooter lane. All good except the score motor keeps running and the outhole relay and kicker keep firing non stop and occasionally the big drop target reset coils on both sides keep firing but not all the time. Switch below the outhole is gapped correctly.

I just ordered a schematic from PBR but the PDF file is available on IPDB. It seemed like logically it might be the normally open score motor switch 3A with the green/black wire but I’ve cleaned it, it is open and making good contact when the score motor turns.

I guess I’m looking in the wrong spot. Any ideas? Thanks, Danny.

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Thanks Howard. I’ll check the Bonus unit now.

Howard, the bonus unit does reset ok but does not step up once reset. I’ll get the jumpers out and let you know what happens.

Wow, that’s a lot of valuable info. I’m
Getting ready to do Howard’s jumper testing and hopefully have something to report on what’s causing the Bonus Unit not to step up.

Thanks to HowardR I’m able to understand schematics more and more but I’m going to go over all of this when I get the schematic this week. Should be a great learning moment.

Thanks pinballdaveh

So after looking at the PDF schematic file I’m assuming these are the three circuits involved that you were referring to in your post along with the circuit that Howard has me testing above. Score motor switches 7D and 8B are make/break and 1a is a normally closed switch that won’t open because of its hold in circuit.

Cool stuff but a lot to wrap my mind around.

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Thanks for pointing that out @pinballdaveh.

A question about this startup sequence that seems odd to me before I test anything.

If I manually step up the bonus unit coil once, the playfield bonus light on 1000 lights like it should and the score motor stops. The ball is on the shooter lane but none of the playfield switches score. In other words still a dead playfield.

My question is shouldn’t it score like a normal game sequence since I manually stepped it up to complete the reset? What else am I missing? Thanks

Of course I did but for starters it looks like I’m supposed to test the bonus unit step up coil by jumping it to score motor switch 6D and work back to the normally open outhole relay switch.

Just want to do it correctly.

Thanks. So I’ll probably have that issue to deal with later.

Sounds good and I’ll start there. Thanks.

Jumped the normally open switch on the Outhole relay and turned the score motor as Howard suggested and no activation of the step up coil on the bonus unit.

Also checked and cleaned the make/break switch at 6D after releasing the switch stacks to where I could get to them and still nothings changed. Outhole relay switches are cleaned and all looked to be properly gapped but still the score motor runs and the outhole relay continuously fires.

Not known but I can unsolder it and check. Visually it looks clean and measures right at 10.5 ohms with it connected and obviously power off.

Let me know if you think it’s worth unsoldering and testing. Thanks

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Ok, what the heck did I do? It resets perfectly now and plays a full game with very few issues and goes to game over after ball 5 like it should.

The only things I did right before it started working properly is I stuck a piece of paper between the contacts on 1A score motor and manually stepped up the coil once on the bonus unit. I still had no power to playfield switches even though the player 1 ball in play light was on and the 1000 bonus score was lit on the playfield.

I then toggled the actuator on the tilt relay and of course it tilted. I then tripped the game over relay and it went to game over. I pushed the start button and I got some loud buzzing so I removed the paper between 1A switches and all of the sudden I had power to the playfield switches and flippers. I played a game (and 5 since) and it resets perfectly each time.

I just wish I knew what happened and I’m guessing it’s possible that I’ll have the same issue down the road. I probably could have found out why if I had been able to perform Howard’s jumper test. For now I’m going to enjoy it. This game is a blast to play, just like I remember it.

Thanks to both of you and feel free to add opinions on what just happened.

Your earlier post made me check it. Thanks.