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Thread: Power Mac G5

  1. #1

    Herm862001's Avatar
    Member Since
    Feb 13, 2006
    Power Mac G5
    power mac g5
    dual 2.2
    1gb ram

    i just replaced a bad power supply, now my computer fans are running very loud. before installing the new power supply the computer was ran quitely.

    the firmware is up to date. reset the pram also.

    any suggestions?

  2. #2

    mac57's Avatar
    Member Since
    Apr 29, 2006
    St. Somewhere
    Clearly something you have done has disturbed the fan control mechanism. Did you replace the power supply with an Apple (or Apple approved) part of the same model and number? Any chance that you failed to connect back up some temperature sensors? Any chance that you left cables etc. out of place inside the machine, disturbing air flow? If all else fails, you may need to take it in to the nearest Apple store for repair.
    My Macs: iMac 27" 3.4 GHz, Mac Pro 3.2 GHz, PowerMac G5 Quad 2.5 GHz, G4 Cube with 1.2 GHz Upgrade
    My iStuff: 64GB iPhone 5, 64GB iPad4, 30GB iPod Video, 16GB iPod Touch
    My OS': Mac OS X Lion, Mac OS X Snow Leopard, Mac OS X Tiger, Mac OS 9.2.2, openSUSE 10.3
    I was on the Mac-Forums honor roll for September 2007

  3. #3

    coach_z's Avatar
    Member Since
    Jul 23, 2004
    North NJ
    my guess is maybe the wrong PSU
    MoTM honor roll...
    i dont remember

  4. #4

    youthpastor's Avatar
    Member Since
    Dec 06, 2005
    I second coach_z. It sounds like the power supply unit may be causing the loud noise.
    New MacBookPro | 2.4 GHz Intel Core 2 Duo |2 GB RAMMac OS X Leopard Version 10.5.5 | iPod Touch 8 GB | iPod Classic 80 GB

  5. #5

    Herm862001's Avatar
    Member Since
    Feb 13, 2006
    i switched the processors & the fans came back to normal.


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