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iMac G5 randomly shuts down.
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Professional Poster
Join Date: Dec 2000
Location: UK
Status:
Offline
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One of the work macs, an iMac G5 (non iSight), has started to shut itself down. It happens several times a day, and at any time, sometimes when in use, sometimes when it has been left.
Any ideas what could be causing this?
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Look after my manor, or I will bum you, literally, to death.
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Posting Junkie
Join Date: Nov 2000
Location: in front of my Mac
Status:
Offline
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Bad power supply? Overheating due to fan problems?
Have you tried AHT to see if it comes up with a specific error code?
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Professional Poster
Join Date: Dec 2000
Location: UK
Status:
Offline
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Havent tried AHT (not my machine and system disks are kept safe!), but the top edge of the casing does seem hot to the touch (no idea whether this is normal for an iMac).
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Look after my manor, or I will bum you, literally, to death.
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Senior User
Join Date: Dec 2002
Location: Portland, OR
Status:
Offline
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Known power supply issue with some G5 iMac's. My GF has a RevB 20" 2.0. It's serial number was covered under the recall and the Apple store in Portland replaced it for free.
Check the Apple Knowledgebase. I think it has affected serial numbers listed or provides lookup.
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iMac - C2D, 2.8Ghz, 4GB, 320GB
MacBook - C2D, 2.4Ghz Uni, 4GB, 500GB
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Dedicated MacNNer
Join Date: Feb 2002
Location: El Sobrante, CA, USA
Status:
Offline
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Originally Posted by ajprice 
One of the work macs, an iMac G5 (non iSight), has started to shut itself down. It happens several times a day, and at any time, sometimes when in use, sometimes when it has been left.
Any ideas what could be causing this?
That's funny... I've had my iMac G5 for two and half years, and it just started having this exact problem too. It's already had two hard drives die. Luckily, it's still covered under the APP. I ran Apple Hardware Test three times... twice the computer shut off before the test could be completed, but the third time it actually finished, but reported no errors. Heh.
Upon further investigation on the Apple K-Base, it seems to be covered under this:
Apple - Support - iMac G5 Repair Extension Program for Power Supply Issues
My system is definately shutting down intermittently, and it has an EMC number of 2056.
Time to take this thing in again, I guess...
(Last edited by Pikeman; Sep 16, 2007 at 11:48 PM.
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Fresh-Faced Recruit
Join Date: Sep 2007
Status:
Offline
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20" imac G5 about 2.5 years old again, started randomly shutting down last week- sometimes lasts couple of hours, sometimes doesn't even get to completely start up... 
AHT quick one showed no probs, the slow one never finished, machine reset itself 13 mins into it- everything ok till then...
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