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Gottlieb Money Calro gate stuck open

Discussion in 'Pinball Tech Support' started by atariaction, Sep 7, 2017.

  1. atariaction

    atariaction Well-Known Member

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    Game worked fine for dozens of games. Now when you turn the game on the gate opens. It will close when you turn the game off. The 2 switches that normally open the gate are not stuck closed. Thinking maybe shorted transistor? Any thoughts?
     
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  2. Aunt Agnes

    Aunt Agnes Member

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    If you've gone through the switch Test already to confirm no switch problems then yes, I would agree and say it's likely a bad transistor.
     
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  3. atariaction

    atariaction Well-Known Member

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    For now I just swapped boards and now good to go. I will replace the transistor next and see what happens. Thanks for the reply ☺
     
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  4. Mike Walsh

    Mike Walsh Member

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    Hey Mike , I am having the exact same problem.
    Can you let me know how you fixed it!? I am fairly
    new with this hobby (addiction) but if you can make
    It as simple as possible I'm sure I will get it.
    Thanks in advance!
     
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  5. atariaction

    atariaction Well-Known Member

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    i swapped driver boards but think it was a bad transistor. q8 if i remember correctly
     
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  6. Mike Walsh

    Mike Walsh Member

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    Great! Thanks for the help!
     
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  7. atariaction

    atariaction Well-Known Member

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    np let me know how it goes
     
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  8. Mike Walsh

    Mike Walsh Member

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    I wasn't really sure which driver board so I pulled the main one in the back box tested Q8 and all transistors in the area. Everything seems ok. Also pulled the aux lamp driver board under the playfield with the same results. Switch test is showing #12 is closed it is located on the spin a ball wheel. I'll try adjusting that switch and see.
    Which board did you replace?
    Any other thoughts?
     
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  9. Mike Walsh

    Mike Walsh Member

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    Quick update, switches are good.
    With the wheel there is always a closed switch. Which ever one the ball is resting on! DUH moment!
    If you can let me know which board it was(location), I'll focus on that. Thanks
     
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  10. atariaction

    atariaction Well-Known Member

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    Lol at least you dont have to remove the wheel and clean it all like i had to do as 1/2 the switches in there werent working. the driver board is on the bottom left of the backbox. send your email and i will send the manual. i looked at it. i see a couple spots that say "gate" but cant see the associated transistor. can you deduce what number solenoid it is when you run the solenoid test? which solenoid number(s) do not fire?
     
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