2006 Mac Pro (ModelIdentifier MacPro1,1) - Fans Full Speed at Boot w/ No Video

Discussion in 'Mac Pro' started by rw3, Sep 17, 2011.

  1. rw3 macrumors 6502a

    rw3

    Joined:
    May 13, 2008
    Location:
    DFW, TX
    #1
    QUICK: Fans Full Speed w/ No Video, Trickle LED Only

    So I have a 2006 Mac Pro and as soon as the power button is pressed, the fans go to full speed and I get no video output. The Diagnostic LEDs on the Logic Board are showing that Trickle Power is good but after 5 seconds I get no LED on the Power On LED.

    This makes me think it is a Power Supply. Before I spend $200 on a new power supply, I would like to get some other opinions. Thanks

    Ryan
     
  2. derbothaus macrumors 601

    derbothaus

    Joined:
    Jul 17, 2010
    #2
    Have you swapped your memory sticks and/ or removed them. Have you reset the pRAM or SMC? Can you safe boot bypassing the video? SIngle user mode boot?
     
  3. rw3 thread starter macrumors 6502a

    rw3

    Joined:
    May 13, 2008
    Location:
    DFW, TX
    #3
    Video Card and RAM have been tested to work in another Mac Pro...so they are not the issue. Also, I have gone through everything in the Apple Technician guide and at this point, power supply seems to be the only thing.
     
  4. nambuccaheadsau macrumors 6502a

    nambuccaheadsau

    Joined:
    Oct 19, 2007
    Location:
    Nambucca Heads Australia
    #4
  5. derbothaus macrumors 601

    derbothaus

    Joined:
    Jul 17, 2010
    #5
    Cool. Just checking.
     

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