trouble with sleep

[memphisbrian]

MODEL iMac G5 (Rev. A)
PROC 1.8 GHz
RAM 768 MB
DRIVE 80 GB

A few weeks ago, my iMac started acting funny when it went to sleep. Whether I put it to sleep or it falls asleep on its own, it doesn't always wake up. And a few times overnight, it apparently goes crazy and starts spinning the fans at full blast.

I've tried deleting preferences, zapping the PRAM, running the hardware test (everything's fine). I also tried re-setting the PMU, but I'm not sure if I did it right.

I have an external Firewire drive that holds all of my iTunes music, and I believe it does it even when the drive isn't connected.

Based on a little online research, I think it could be related to upgrading to 10.4.7 but I'm not entirely sure.

Thanks,
Brian

 

[shresblo_h2o]

Hi memphisbrian,

I can only give my experience here, I have an iMac G5 2.0GHz and put it to sleep overnight 24/7. One morning I tried to wake it and no matter what I tried it wouldn't wake. The HD span and the fans kicked in, sometimes very loudly. I took it in for a checkup and they replaced the LCD screen. Hope this helps.