Mac iMac Shuts down by itself, help.

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vidkid1

Posts: 7   +0
I've got an iMac, (the swinging arm kind not the newer one). It has been ok since purchased, but recently it has been shutting down by itself. Has anyone else had this problem? I hear it may be a thermal issue, a PRAM issue, an overloaded FIREWIRE bus or USB bus, or the logic board or PSU. Those seem like obvious choices. Im looking for any hard line experiences from anyone out there regarding this.

It shuts down at no particular time length or CPU activity. I could be running Photoshop with some heavy task or nothing could be open and it shuts down.

Any insight would be appreciated.
 

vidkid1

Posts: 7   +0
Ooops

Sorry, I thought maybe someone may have such a machine in the back or something. Don't kick me out though, I just finished building 2 customized PCs. with alot of help from Techspot. Thanks anyways.
 

vnf4ultra

Posts: 1,360   +2
Which iMac? The g5 imacs had some power supply problems, which would cause some problems like you describe. Most times both the power supply and the logicboard get replaced if that's the case(because a lot of the time the power supply will fry the logicboard). There's a certain range of the g5 imacs that are affected, and if yours is in the range, then you could qualify for warranty repair, even if it's out of the normal warranty period, since it's a known issue.
http://www.apple.com/support/imac/powersupply/repairextension/

Edit: Oh, I see, you must have one of the "soccer ball" imacs. I don't believe they have the same power supply issues that the g5 imacs do.
 
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