Imac Power Supply No voltages except 20-24 volt only

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  • 8cuda
    Member
    • Apr 2011
    • 46
    #1

    Imac Power Supply No voltages except 20-24 volt only

    Imac 17 Power Supply
    661-0293 180W
    API3PC94-290
    03K22-0006I Rev A
    I get 23 volts on pin 22. No other voltages on the other pins. I measured between the capacitors of 318 volts.
    There are no 3.3, 5, or 12 voltage
    Last edited by 8cuda; 04-18-2011, 10:22 PM. Reason: spelling
    Tags: None
    • Toasty
      Badcaps Legend
      • Jul 2007
      • 4171
      #2
      Re: API3PC94 Imac G5 Power Supply - No voltages except 20-24 volt only

      There are at least 20 threads here dealing with these PSUs and their problems. Use the search function and do a bit of reading.

      The API3PC94 is the board model and can come in different cases, such as your 661-0293, but may also be found in 661-3351 and 614-0293. Cases got switched about a lot. That's why it's best to rely on the board model number for troubleshooting.

      If there is 20-24v, there should be 5v standby also, since they both come through the standby transformer. If not, that's the place to start troubleshooting.

      Welcome to the forums!

      Toast
      veritas odium parit

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