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You are here: MacNN Forums > Hardware - Troubleshooting and Discussion > Mac Desktops > Help! iMac won't turn on

Help! iMac won't turn on
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Fresh-Faced Recruit
Join Date: Oct 2009
Status: Offline
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Oct 25, 2009, 12:10 AM
My 2006 intel based iMac will not turn on at all. There is no light or noise. I've checked the power source and have the computer plugged into the wall outlet and still nothing. Any help would be appreciated.
Senior User
Join Date: Aug 2006
Location: Toronto, Ontario
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Oct 25, 2009, 12:15 AM
to me it sounds like a serious problem. id give apple a call, and make that appointment at the genius bar.
R.I.P Steve Jobs
Mac Elite
Join Date: Nov 2006
Location: here
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Oct 25, 2009, 12:55 AM
Have you unplugged your iMac for about ten minutes?

Maybe this helps.

I've had one issue after a sudden power-out (I got apc power-out protection after that), and my iMac didn't turn on right away. I unplugged it for ten minutes, and then it powered up.
Mac Elite
Join Date: Jan 2001
Location: Helsinki, Finland
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Oct 25, 2009, 05:31 PM
You can also try resetting the System Management Controller (SMC).

Intel-based iMac, Intel-based Mac mini: How to reset the System Management Controller (Pretty much like above, but do unplug all cables)
Mac Elite
Join Date: Oct 2002
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Nov 13, 2009, 03:37 AM
If after all that, you still have the same problem... it's either your charger or the Mac mini logic board.
Posting Junkie
Join Date: Nov 2000
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Nov 13, 2009, 03:59 AM
The OP is talking about an iMac. There is no charger or external power supply.

It's quite possible your internal power supply has died. Maybe another case of bad capacitors...? You should probably have an AASP look at it. Do you have AC? Even if not, if it's just the power supply, a replacement plus labor might not be that expensive.
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