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Hi,
I have an iMac that starts up fine most of the time.
It can go for days working just fine.
When it fails, a push to the power button does NOTHING.
Inevitably, if I try enough times it works fine!
Any ideas?
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Probably a failing power supply. To get you to the correct part we would need to know your exact machine. The power supply probably has to cool down before a restart. Open it up and look at where the power leads enter the power supply form the motherboard. If you see a burned area close by, you will know for sure. Opening up this one is usually a matter of three screws on the bottom of the frame. The part looks like this: [produto vinculado ausente ou desativado: IF165-002]
Here's how to get to the typical G5 iMac power supply:iMac G5 17" Model A1058 Power Supply Replacement
Again, check your model, it's located on the bottom of the stand.
Esta resposta foi útil?
The iMac is a first generation 17" iMac and has no burned leads. It has a apple 661-3351 power supply.
You suspect the power supply, but when I run through apple's iMac test procedure,
http://support.apple.com/kb/ht2173
none of the buttons get the cool iMac to start up - when it's in failure mode (like today).
Do you still think it's the power supply?
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