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1.8 or 2 GHz G5 processor

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iMac will not even start to start.

I need diagnostic help!

My 20" iMac G5 (no camera) worked great until one day it just would not start. Pressing the start button yeilds nothing except (sometimes) a very short, quiet squeak sound. The power light does not come on. The screen does not light up.

I would like to fix this but am afraid of spending money on a power supply only to discover it is not a power supply problem. Can anyone tell me the likely cause of this problem, and how likely that it is the actual cause? Any recommendations or guidance would be very much appreciated.

Answered! View the answer I have this problem too

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Before you spend any money, examine the 24 capacitors (cans) on the logic board for swelling and/or leakage.

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You'll have to open the machine and observe the diagnostic LEDs. That will tell you if the power supply is the problem, or if it's something else..

If this Answer is helpful please remember to return and mark it Accepted.

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