(Topic ID: 270569)

Twilight Zone switch \ opto issue

By Boltronix

3 years ago



Topic Stats

  • 4 posts
  • 2 Pinsiders participating
  • Latest reply 3 years ago by yzfguy
  • No one calls this topic a favorite

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    #1 3 years ago

    Howdy pinball fanatics. Twilight Zone mini pinball playfield enter switch when activated in test mode activates the same input as the switches on the playfield itself. Specifically the two playfield switches on the left. A new MPU with a new U20 has been installed.

    I also have 4 optos not responding. The shooter, center lock, top lock and gumball enter optos. I have replaced the opto board.

    If anyone wants to help me find the wire i ripped of somewhere under the playfield well than great.

    #2 3 years ago
    Quoted from Boltronix:

    Howdy pinball fanatics. Twilight Zone mini pinball playfield enter switch when activated in test mode activates the same input as the switches on the playfield itself. Specifically the two playfield switches on the left. A new MPU with a new U20 has been installed.
    I also have 4 optos not responding. The shooter, center lock, top lock and gumball enter optos. I have replaced the opto board.
    If anyone wants to help me find the wire i ripped of somewhere under the playfield well than great.

    That opto board has a connector on it where the wires are pressed in along the length of the wire, rather than at the end of the wire. I'd put the game in switch edge test mode with playfield up and try wiggling those to see if you get a reaction. I had optos out and had to reseat one of those wires.

    #3 3 years ago

    good idea THANKS

    2 weeks later
    #4 3 years ago
    Quoted from Boltronix:

    good idea THANKS

    Fix this yet?

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