(Topic ID: 237380)

CPU WPC-S not working. All leds off.


By guido

1 year ago



Topic Stats

  • 3 posts
  • 2 Pinsiders participating
  • Latest reply 1 year ago by guido
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    #1 1 year ago

    I was trying to fix the transformer because it was very noisy. So I have tightened some nuts and I have given a couple of blows with a rubber hammer to demagnetize it. Now, when I turn on the pinball the CPU board does not do anything showing all the LEDs off (D19, D20, D21). I have checked all the fuses and all of them are working.
    Could any of you tell me what is going on?

    #2 1 year ago

    Maybe you knocked a connector loose? Or a wire from a connector? Or all of the rubber hammer bashing somehow knocked the main line 8 amp fuse loose?

    I was unaware bashing the transformer with a hammer could be beneficial. I'll have to look into that.

    #3 1 year ago
    Quoted from CrazyLevi:

    Maybe you knocked a connector loose? Or a wire from a connector? Or all of the rubber hammer bashing somehow knocked the main line 8 amp fuse loose?
    I was unaware bashing the transformer with a hammer could be beneficial. I'll have to look into that.

    Hi CrazyLevi I'm sure I didn't hit anything but the transformer. I checked all the fuses and they are ok. I read about bashing the transformer in this thread https://pinside.com/pinball/forum/topic/humming-sound-wpc-s#post-4532825

    I have checked the leds on the powerdriver and Led 2, 3 and 4 are off. The led 4 should be always on since it is the 5V. I've read that BR2 could not be working if that happens. I don't know how bashing the transformer is related to BR2 though.

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