iMac g5 heat/fan issues...

Discussion in 'PowerPC Macs' started by Crashing Bore, Jul 8, 2007.

  1. Crashing Bore macrumors newbie

    Apr 16, 2007

    What is wrong with this picture? The fans are running out of control constantly. This machine is sooo loud. The power supply was just replaced, which did little/nothing. Reset all ram/etc. :confused:
  2. Crashing Bore thread starter macrumors newbie

    Apr 16, 2007
  3. isprocket macrumors newbie

    Jul 11, 2007
    New Haven,CT.
    My G5 iMac also has intermittent fan speeds that seem very high. At time the CPU fan will run 4000 rpm and CPU temp over 155 F.
    After I quit a site that ramps up fan speed like U-tube the fans continue to run fast.

    If my G5 then sleeps and wakes up, fan speed returns to high levels. If I restart, fans are likely to return to quiet levels aprox 1500 rpm.

    Should I be concerned?
  4. boris.jones macrumors newbie


    Jan 8, 2008
    G5 imac 24" new problem fan costantly on form start up

    I have a new prblem my Imac is only a few weeks old . Turned it on today after being completely off over night with power supply off also and the moment I touch the on button the fan kicks in full blast and never NEVER goes off.

    Will get my apple care on it on Monday but is this a common problem?

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