G5 fan on high, then freezes???

Discussion in 'PowerPC Macs' started by Sofa King, Jul 14, 2008.

  1. Sofa King macrumors newbie

    Jun 9, 2003
    Hello all,
    im posting about recent issues with my G5 DP 2GHZ.
    My rig has been fine since day one, but since I changed my system drive, and added a second drive, the fan radomly goes into a crazy high speed mode, and then locks up, requiring a hard shut down.

    heres the facts:
    *my os is 10.4.9
    *2.5 gb ram
    *used carbon cloner to copy my original system disc to new Seagate 7200.11 1 TB drive
    *installed second 1TB storage drive.
    *both drives divided into 6 partitions.
    *both drives formatted OS extended [Journaled]
    *jumpers are in the correct position
    *drive firmware is SD15, the correct, and most current
    *drives are set to never go to sleep
    *fan/freeze is not task specific, meaning it will lock up with no apps open
    *this fan/freeze is sporadic, and has happened three times in the last 4 days.

    ive attached the system log.
    I know nothing about these logs, so my apologies if Ive included too much, or not enough data.

    The most recent crash, was at july 14, at 4:10 pm.

    thanks for the help.
    all the best,

    Attached Files:

  2. Chaos123x macrumors 68000

    Jul 8, 2008
    Sounds like on of your CPU's overheated.

    I hope you have Apple Care.
  3. Sofa King thread starter macrumors newbie

    Jun 9, 2003
    Thanks for responding.

    what makes you think that the CPU is overheating?
    Was it something in the log?

    I ask because, this computer is, and has been, and a VERY cold control room from day one.
    And the fan does not ramp up, then freezes, it seems as if the fan ramping up is a result or by-product of the freeze, not the cause, but I could be wrong.

  4. Sofa King thread starter macrumors newbie

    Jun 9, 2003
  5. Chaos123x macrumors 68000

    Jul 8, 2008
    I am sofa king we todded :eek:

    Thats what happened to mine it started sounded like a jet.

    Either that or one of your thermo sensors is broken, but that would not lead to a crash.


    Make sure the clear plastic air flow cover piece is in correct.

    Set the power/performance to normal.
  6. californiak macrumors newbie

    Aug 29, 2007
    How did you fix your overheat/freeze problem? My G5 has the same problem

  7. California macrumors 68040


    Aug 21, 2004
    Reinstall the OS.

    It happened on a dualcore G5 of mine, just tonight, in Tiger.

    I upgraded to Leopard and no issues.

    Or just reinstall Tiger. Google around; I think the freezing thing is a known issue.

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