iMac 2012 strange fan noises only at startup

Discussion in 'iMac' started by lanata, Jul 7, 2013.

  1. lanata, Jul 7, 2013
    Last edited: Jul 7, 2013

    lanata macrumors newbie

    lanata

    Joined:
    Apr 19, 2013
    Location:
    Bs As, Arg
    #1
    Hello,
    I have an iMac 21.5" 2.7 Ghz since April, and in the last two weeks when I turn it on, you can hear the fans going at full speed for a couple of seconds and then quiet down. And when you're using it normally (let's say with Chrome and Photoshop), the noise comes back for a few seconds and quiet down again.
    I don't know what's going on, I searched the Apple's knowledge base and found something about fan noises but none relatively similar with my issue.
    Thanks in advance for any help.
     
  2. wrldwzrd89 macrumors G5

    wrldwzrd89

    Joined:
    Jun 6, 2003
    Location:
    Solon, OH
    #2
    I've had this odd issue with my Rev. D (2008) iMac, but not my 2012. I'm not completely sure what causes it either. What I do know is that issues of this sort can be caused by foreign material inside the cooling system - say, dust particles, but that doesn't appear to be the cause of my issue.
     
  3. lanata thread starter macrumors newbie

    lanata

    Joined:
    Apr 19, 2013
    Location:
    Bs As, Arg
    #3
    Thanks for the comment. Let's see if somebody else is on the same boat.
     
  4. lanata thread starter macrumors newbie

    lanata

    Joined:
    Apr 19, 2013
    Location:
    Bs As, Arg
    #4
    After installing some AppStore updates, I think the noise stopped.
     

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