iMac G3 Problem

Discussion in 'PowerPC Macs' started by Sawtoothdude, Dec 2, 2007.

  1. Sawtoothdude macrumors regular

    Sep 3, 2006
    I have an iMac G3 400Mhz model with firewire that up until recently worked perfectly, 2 days ago however it stopped waking up from sleep mode. It boots up normally and works fine but when it goes into sleep it never comes out correctly.

    The usual pulsing orange light appears but when i press the button again it shows up green but there is no system activity occasionally it will shut itself off too.

    Does anybody know if a PMU reset will fix this, I have performed a PRAM reset multiple times but cannot figure out where the PMU switch is. Thanks a ton.
  2. California macrumors 68040


    Aug 21, 2004
    Check the power cord, too; they go bad on those models. Didyou google PMU switch for imac g3?
  3. Sawtoothdude thread starter macrumors regular

    Sep 3, 2006
    yes, i have purchased a Brand new PRAM battery, I have had it wake up a few times under OS 9, but i get Kerne Panics under 10.3

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