iMac 27" (late 2012) is switch off but fan run at full speed

The fan sound stop when I press the computer power button and start the normal booting. The fan just run when it is successfully shutdown.

I have tried resetting SMC and PRAM but problem is not fixed.

I don't see anyone else has this problem in communities. Any idea?

iMac (27-inch, Late 2012), OS X Mountain Lion (10.8.2)

Posted on Dec 25, 2012 4:55 PM

33 replies

Aug 25, 2015 3:13 PM in response to Espunny

Hi,

I'm having the same problem with my iMac 27 (late 2012). I know this thread is too old but did anyone found a solution?

Jun 14, 2017 1:28 PM in response to Haukenpo

What did they replaced exactly? I have got the same model and same issue as well!!😝

Jun 14, 2017 1:32 PM in response to Haukenpo

Is there some technician that can explain what is wrong? Seems like a common issue. Perhaps we should start to make a formal complain to Apple??

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iMac 27" (late 2012) is switch off but fan run at full speed

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