(Topic ID: 335794)

Grand Prix doesn’t eject ball from right bonus hole

By Judoratt

12 months ago



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  • 5 posts
  • 3 Pinsiders participating
  • Latest reply 12 months ago by Mikala
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    #1 12 months ago

    Playing old reliable Grand Prix, the ball won’t kick out of the right bonus hole. When it goes in the score motor runs continuously and the right bonus relay pulses but won’t lock on like the left one does when it completes the scoring and launches the ball. Any help would be greatly appreciated.

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    #3 12 months ago
    Quoted from HowardR:

    Check the Right Bonus unit zero break switch and the hold switch on the Right Bonus relay for proper operation.
    For a switch to work 3 things are necessary:
    1) When open, there should be a small space between the contact points (duh)
    2) When closing, the long blade's contact point should push the short blade's contact point enough to move the short blade
    3) The contact points should be clean, which they usually will be if #2 is happening
    [quoted image]

    Howard, thank you.
    Switches are cleaned adjusted still pulsing if i hold the relay it will complete the sequence. Does the relay lock its self on through a switch on the relay?
    I have noticed that the game won't launch a ball in to the trough/shooter the score motor runs and wont launch the ball there also.

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