All-in-one desktop computers from Apple. iMacs have been equipped with Intel processors since January 2006.

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Is my power supply partially fried?

I have an iMac A2133 that will not power on unless the hard drive power cable is disconnected.

With the HD connected i get 1 led lit up and the fans try to work.

With the HD disconnected i get all 4 led lit up and the machine chimes and powers up.

Is the power supply partially fried or do i have a bad hard drive?

Answered! View the answer I have this problem too

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I tried another HD and it worked. Original HD has a burn mark on the PCB. :(

Thank you for the suggestion.

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There is a very strong chance you can get your data back off the broken hard drive if you replace the logic board on the hard drive with one from another hard drive with the exact same model. I have done this a number of times with success.

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Simple way to check would be to hook up another hard drive to the cable. If it works you have a bad hard drive--if it doesn't further troubleshooting will be required. Good luck

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+ smart quick step to troubleshooting...

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