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  1. #1
    iMac Fan Running Fast?
    RadDave's Avatar
    Member Since
    Jan 20, 2012
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    Specs:
    MBP 13" (2013); 2.6 GHz i5; 8 GB RAM; SSD 256 GB; OS 10.10.5
    iMac Fan Running Fast?
    Hi All - bought an iMac (specs below) in April of this year - used mainly by my wife - she came out this morning and said the computer was noisy. On inspection, the noise was a fast fan (never happened before) - I first did a Time Machine BU and cloned the HD w/ CCC.

    Then I simply shutdown & powered back up - no noise. iStats reported the fan @ 3400 rpm when noisy, now running @ 1400 rpm (temp about 80 degrees F). I was planning to reset the SMC if the noise returned, but seems fine @ the moment. Any other advice, checks, etc.? Thanks - Dave


    iMac 21.5" display
    OS X 10.9.1
    2.9 GHz Intel Core i5
    16 GB 1600 MHz DDR3
    NVIDIA GeForce GT 650 M 512 MB
    Fusion Drive 1 TB

  2. #2
    iMac Fan Running Fast?
    harryb2448's Avatar
    Member Since
    Nov 28, 2007
    Location
    Nambucca Heads Australia
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    20,056
    Specs:
    iMac i5 2.7GHz, 16GB memory, OS 10.10.5
    Apple explains things in this article about resetting the SMC:-

    iMac: Fans run at full speed after computer turns on
    Hang on to those original install discs like grim death! Using OS X.7 or later make a bootable USB thumb drive before running Installer!

  3. #3
    iMac Fan Running Fast?
    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Fort Worth, Texas
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    45,271
    Specs:
    27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, iPhone 6+, 3 iPods, Yosemite
    Reference the Apple article: Who in world pushes the power button on at the same time while plugging the AC power cord in to the receptacle?

    @Dave

    Did you buy Apple care for the iMac? If not, might be a good time to do so before the one year warranty is up on that machine.

  4. #4
    iMac Fan Running Fast?
    RadDave's Avatar
    Member Since
    Jan 20, 2012
    Location
    North Carolina
    Posts
    2,547
    Specs:
    MBP 13" (2013); 2.6 GHz i5; 8 GB RAM; SSD 256 GB; OS 10.10.5
    Quote Originally Posted by chscag View Post
    Reference the Apple article: Who in world pushes the power button on at the same time while plugging the AC power cord in to the receptacle?

    @Dave

    Did you buy Apple care for the iMac? If not, might be a good time to do so before the one year warranty is up on that machine.
    Hi Harry & Chscag - thanks for your comments! Not to worry, I do have Apple Care and bought locally at a MacAuthority store in the mall.

    Also I was reviewing information on resetting the SMC, and for an Intel-based iMac (directions quoted below), a little simpler than trying to bring Frankenstein to life -

    Dave

    Shut down the computer.
    Unplug the computer's power cord.
    Wait fifteen seconds.
    Attach the computer's power cord.
    Wait five seconds, then press the power button to turn on the computer.

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