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Thread: IMAC squeaking

  1. #1
    IMAC squeaking

    Member Since
    Apr 25, 2012
    Posts
    6
    IMAC squeaking
    Hi, everyone,

    I have the previous series 21,5 inch Imac (3.06GHz, 4GB, 1TB, ATI 4670).
    It makes an unusual sound, a discreet but annoying squeaking, having a repetitive pattern.

    I assume it could be the cooler's fan. It's been doing this for some months now, so I don't think it's anything related to the HDD, for instance.

    Any hints for getting rid of it myself (beside keeping it on Sleep mode)?

    Thanks!

  2. #2
    IMAC squeaking
    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Fort Worth, Texas
    Posts
    45,271
    Specs:
    27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, iPhone 6+, 3 iPods, Yosemite
    Since there are three fans in your iMac, you're going to have to track down which one is doing the squeaking. An iMac is not an easy machine to take apart and should only be attempted if you're confident you can do it. See the take apart instructions for your model at iFixit: The free repair manual. Of course if your iMac is still covered by Apple care, let Apple do it.

  3. #3
    IMAC squeaking

    Member Since
    Apr 25, 2012
    Posts
    6
    Thanks for the reply.

    I'm no specialist, so the idea of the fan making the noise was just that - an idea.
    Would you confirm that the annoying sound is most probably a symptom of a fan failure? Or are there other possibilities?
    And if it's about the fan, isn't it possible that there is some dirt/dust preventing it to spin properly and I could maybe blow it off with a compressor through the space on the back of the IMAC?

  4. #4
    IMAC squeaking
    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Fort Worth, Texas
    Posts
    45,271
    Specs:
    27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, iPhone 6+, 3 iPods, Yosemite
    Your assumption about the squeaking was in my opinion correct which is why I responded and let you know about the three fans. Your idea of blowing air into your iMac with a compressor is not a good one and can actually cause damage to the machine.

    Your iMac draws cool air in from its bottom vents and exhausts warm air through the top openings. So it's possible that over time a fan or fans have accumulated dust. But usually squeaking has more to do with fan bearing failure rather than dust buildup. It's best to replace the squeaking fan.

  5. #5
    IMAC squeaking

    Member Since
    Sep 10, 2011
    Location
    Colne,UK
    Posts
    1,744
    Specs:
    iMac 27" Mid 2010, 3.2GHz Intel Core i3,12GB 1333 MHz DDR3, ATI Radeon HD5670 512MB, Yose 10.10.5
    FWIW I occasionally hook up the narrow nozzle up to my 'hoover' and suck out the fluff from both intakes underneath R & L of my iMac and also the exhausts. The cheeky one is the vent right at the back behind the stand spigot.
    iMac 27-inch Mid 2010 (wow....that old...eeeks!), WD My Book 1TB Firewire,WD My Passport Air 500GB, Magic Mouse,Magic Trackpad,
    iPhone 5C, iPod Nano 4GB 3rd Gen, ATV2.
    MOTM October 2012. These days normally happy with an occasional grumble.

  6. #6
    IMAC squeaking

    Member Since
    Apr 25, 2012
    Posts
    6
    Thank you very much!

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