Powermac G5 2x2Go don't reboot

Discussion in 'PowerPC Macs' started by zoulouindia, Jul 27, 2010.

  1. zoulouindia macrumors newbie

    Jul 27, 2010
    Hello ALL,

    Good evening. I'm new on this Forum.
    Owner of that Mac from december 2003 all was OK.
    From 2 months it will not reboot after a soft update or after the command "Command+Alt+P+R".
    The G5 arrest correctly but then don't reboot. I must then switch off and after any minutes start it …

    That always the same with one of the two internal disks SATA or with one of the two external disks Firewire.
    And also with Mac OS X Tiger 10.4.11 or Leopard 10.5.8.

    A control with "Apple Hardware Test" don't seen anything !

    Has someone one idee or better a remedy ? Thank you for your reading.
    Cordially. Pierre Moello.
  2. 666sheep macrumors 68040


    Dec 7, 2009
    Reset PMU and replace PRAM battery if needed (measure its voltage first if you can). If it won't help, it most likely is logic board or PSU problem.
  3. zoulouindia thread starter macrumors newbie

    Jul 27, 2010
    Powermac G5 2x2Go don't reboot

    Thanks for your reply.
    I already changed the battery for a new and reset PMU.
    I think also it's a logic board problem, but Apple sell no more these, because
    this Mac is older than 5 years …

    Many thanks and good luck with your's Mac.

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