Description
  • What’s this thing’s deal? It’s not starting properly.
  • Let’s just trace the power through the circuit diagram.
    - Reset relay - operates when start button is pressed. Looks like power comes out on a dual switch with red/yellow weave wire.
    - Tilt relay - from the diagram, it looks like it goes to a dual switch, the normal side of which should pass through, and the momentary side should go to the game relay
    - the tilt relay flips at power on, which is pretty wrong. Isn’t it?
    - It flips because there’s something on the lock relay that starts that way. If I disable the switch, it doesn’t happen. And sometimes it doesn’t happen regardless. And if it doesn’t happen, then you can’t start a game.
    - Anyhow, the power did not pass through the tilt switch to the game over relay. Fixed and verified with a meter. But that didn’t fix anything, so that was a problem, but not the problem. So what’s the problem?
  • Let’s try looking from the start button forward.
    - I can’t find the start button. But it only works when the machine is tilted.
    - Wait, no. It only works when the game relay is tripped. Can I find it from there?
    - The start button is called the “replay switch”. I think the theory is that normally just putting a coin in starts the game, and there are no credits, just replays. Credits must have come later.
    - So that passes through the following:
    - replay unit zero, normally closed. So zero credits opens it.
    - or gate
    - lock relay, normally closed
    - game relay, normally open
    - 25c relay
    - ending up in the replay relay.
    - What if I just trip that relay?
    - It does something like a startup sequence, and then does not work. What trips the kicker?
    -
Media

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