(Topic ID: 227288)

Bally Transformer Bad?


By DANGERTERROR

10 months ago



Topic Stats

  • 7 posts
  • 2 Pinsiders participating
  • Latest reply 10 months ago by Quench
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    #1 10 months ago

    I’m not getting 12v to power the boards in a Bally Speakeasy.

    On the rectifier board: At 11.9v test point I’m getting 6.0v DC. The rectifier board is brand new and that eliminated a bunch of other issues. But the 12v from the transformer seems to be the last problem. I never deal with transformers — is it time to pick up a used one? Or just throw a cheap switching supply in there?

    I can actually run the new replacement MPU on the existing 6.5v and it works with all flashes, but the symptoms are that controlled lamps, motor, displays all don’t work. GI and coils do.

    Thanks!

    #3 10 months ago

    I think I’ve eliminated the rectifier board as an issue, the AC coming in to the 12v rectifier is low too, I think it was at 7-8? I’d have to measure it again as I didn’t write it down. Thanks!

    #6 10 months ago

    It’s set up for 120 on a 120 line. The problems arose after a move. Fine before that. I have a 100% new rectifier board in there, newly manufactured, and before that I’d rebuilt the last one, they both have the same behavior. But I will try that test. If it is the transformer, what next?

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