(Topic ID: 289677)

BK2K System 11 power supply no 12vdc

By ArnieC

3 years ago



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  • 7 posts
  • 4 Pinsiders participating
  • Latest reply 3 years ago by G-P-E
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    #3 3 years ago
    Quoted from donjagra:

    Dang. Double check all of your work. Did you use the right transistor? Some of them have to have the legs twisted.
    https://troxelrepair.com/product/williiams-system-3-11c-high-voltage-pinball-repair-kit/

    High voltage repair kit does not include any parts related to 12Vdc.

    #4 3 years ago

    Do you have the original 2n2057/2n2059 to put back in the board to see what you get? I think the new 2n2059 is lower for some reason. Where did you buy it from? Seems like a potential fake part.

    I understand there is resistor that can change that can bring up the 12v. It was mentioned on a pinball repair FB group last year. I should have saved that info.

    #6 3 years ago

    Yeah....I got many of fake 6821 parts from there.

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