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  1. #1

    Member Since
    Aug 12, 2008
    Angry fan huumming as loud as jet
    My hardware conf is

    Machine Name: iMac G5
    Machine Model: PowerMac8,2
    CPU Type: PowerPC G5 (3.0)
    Number Of CPUs: 1
    CPU Speed: 1.8 GHz
    L2 Cache (per CPU): 512 KB
    Memory: 512 MB
    Bus Speed: 600 MHz
    Boot ROM Version: 5.2.5f1

    now as soon as i start mac in just few seconds it starts fan on top speed which makes humming sound quite loud what should i do to stop this

  2. #2

    harryb2448's Avatar
    Member Since
    Nov 28, 2007
    Nambucca Heads Australia
    iMac i5 2.7GHz, 16GB memory, OS 10.11
    See if resetting the SMU is any help in controlling the fans:-

  3. #3

    Member Since
    Aug 16, 2008
    Check if there is a large amount of dust at the bottom.
    I think that is what killed my mother board.

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