new imac fan will not turn off

Discussion in 'Mac Basics and Help' started by wizzerandchips, Mar 9, 2009.

  1. wizzerandchips macrumors 6502

    Joined:
    Jul 6, 2006
    #1
    have a new 24" imac, about a year old and the fan came on after it got very hot, only browsing the web) and now it wont turn off!, switched off mac last night, turned it on again this morning and fan is spinning like a goodun. :confused:
     
  2. BlueRevolution macrumors 603

    BlueRevolution

    Joined:
    Jul 26, 2004
    Location:
    Montreal, QC
    #2
    Sounds like your temperature sensor may be acting up. I'd take it in to the shop.
     
  3. xodus macrumors newbie

    Joined:
    Aug 22, 2006
    Location:
    Toronto, Canada
    #3
    There might just be a process that is hogging your CPU.

    Open /Applications/Utilites/Activity Monitor

    Change from "My Processes" to "All Processes"

    Sort by CPU (Decending) and see if any process is over 80%. If so, quit it. Or force quit.

    OR

    /Application/Utilities/Terminal

    type in "top" (no quotations) and hit enter

    If any process is taking a serious % of your CPU then type

    killall <nameofproccess>

    e.g.: killall Firefox


    Another tip is download iStats Pro: http://www.islayer.com/apps/istatpro/

    This will tell you exactly what part of your machine is the hottest.

    Good luck!
     
  4. wizzerandchips thread starter macrumors 6502

    Joined:
    Jul 6, 2006
    #4
    thanks, have got istat and clicked on fans and is blank, so must be a problem, done all what you have said and nothing is over 6%, so its a trip to apple.
     
  5. champagnetaste macrumors newbie

    Joined:
    Nov 28, 2009
    #5
    Your advise worked for my Mac

    Thanks for the advise. I followed it to the letter. My Mac is sweet and silent now. Whew!
     
  6. DoFoT9 macrumors P6

    DoFoT9

    Joined:
    Jun 11, 2007
    Location:
    Singapore
    #6
    it does sound pretty bad for you, sounds like the fan might be dead (or the heat sensors or something related). get that checked out asap
     

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