iMac G5 keeps powering down by itself ! HELP

Discussion in 'Macintosh Computers' started by shake, May 4, 2005.

  1. shake macrumors regular

    Aug 14, 2002
    Toronto, CANADA
    i have a iMac G5 revA. this morning, all of a sudden, the iMac just powered off by itslef... like the power cord got pulled from the back. restarting it doesnt help. just keeps powering off.

    i tried resetting the SMU and no luck. if i let it sit for a few minutes, it will reboot and get to the desktop, but a power down happens eventually.

    i tried rebooting in verbose mode, and i found this : " AppleSMU shutdown cause= -122 ". don't know what this means.

    this seems like a power or overheating issue.

    any ideas? all insight is appreciated.

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