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Apple Desktops Discussion of Apple's desktop machines including Mac Pro, iMac, Power Mac, and mini

iMac - Fan comes on and stays on

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Just the Tonic

Member Since: Mar 06, 2009
Posts: 1
Just the Tonic is on a distinguished road

Just the Tonic is offline
I have a large imac, aluminium

The whole thing seemed to be running slow, and seemed hot. I shut it down and on restart a fan came whirring on immediately, as soon as the start up button is pushed. I have tried reinstalling operating system, still the same.

I have tried smcfancontrol, but it doesn't seem to even register a temperature or fan speed

I have tried the istats widget thing, and that doesn't register any fans, or at least I can't get it to show anything

Anyone got ideas on what has happened?
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Member Since: Aug 21, 2008
Location: Maryland
Posts: 233
ErikJenkins1187 will become famous soon enough
Mac Specs: 2.66Ghz Penryn C2D iMac

ErikJenkins1187 is offline
Did you try resetting the PRAM? Sounds like the controller that monitors all the temp sensors is out to lunch.
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