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iMac fan starts on full speed after shutdown
Very interesting is, that when I'm using bootcamp and shutting down computer under the MS Windows, then everything is ok.
Bu iyi bir soru mu?
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I would suspect bad capacitors on this machine. To get you to the correct guide to open it, please give us the last three figures of your serial number located on the bottom of your stand.
UPDATE Now that I know your machine model, I do not suspect capacitors. Did you replace the hard drive?
Try starting up in Safe Mode by holding down the Shift key on start up and let us know if the issue persists.
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Hello.
I changed the hard drive (SSD) on my iMac EMC 2544, Late 2012 13,1. After that, I had exactly the same problem. Can you advise me of anything? After installing the old hard drive back, nothing has changed.(((
This is an old answer and incomplete as the OP never told me if he had changed the hard drive When changing hard drives on this model you have to address the temperature sensor as the on Apple up in was proprietary. OWC has a solution. Here it is:
From OWC Dyllon: Great question! The Late 2009 – current iMacs will need the OWC In-Line Digital Thermal sensor with the exception of the 21.5″ 2012-Current iMacs!
What is confusing you here is Apple altered the drive to a 2.5" in the 'Thin Series' 21.5" iMac which came out in 2012. Only the newer 'Thin Series' 27" iMac which have a 3.5" HD drive need the in-line sensor. This is if you change out the drive with either a HD or SSD in any of the 'Thin Series' 27" models
The older 21.5 & 27" from 2009 to 2011 use the 3.5" HD drives and they all need a thermal sensor either using the Apple custom cable in the 2009 & 2010 when replacing the HD with a new one. Or, the OWC in-line sensor from 2009 thru 2011 with either a HD or SSD.
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How about installing this app so we can see what your systems thermal management is up to here: TG Pro. Paste a full screenshot of the main screen so we can see all of the sensors in an answer.
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Your systems specs: iMac 21.5" 2.7 GHz i5 (Late 2012)
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