iMac 20" new, fan running LOUD

Discussion in 'iMac' started by 1ede2, Sep 14, 2009.

  1. 1ede2 macrumors newbie

    Sep 14, 2009
    I just bought my new imac on friday. Worked great for a day and then I had a problem. The fan came on really loud for about a good 10 secs and the screen turned off. I hit the power button and the screen came back on quickly like it had went to sleep. However, the fan came right back on very loud and the screen went black. I did this a couple times until I just let it shut down for an hour because I thought it overheated.
    The next time I turned it on it worked fine for about 3 hours and suddenly the fan came on super loud. This time the screen didn't shut off and I was able to continue but it was abnormally loud.
    This morning I turned it on again and within a minute the fan came on AGAIN. I have to mention that I'm not using any intensive application or anything. The last time I think I only had safari up. Also, this is my first mac and it's not looking promising...
  2. trose macrumors regular

    Dec 28, 2002
    I'd definitely contact Apple if this is a new Mac.

    Sounds like you may have got unlucky and could be something faulty with the hardware.

    Either way, you have free support with a new Mac, might as well take advantage of it!
  3. 1ede2 thread starter macrumors newbie

    Sep 14, 2009
    I called the support line yesterday and the best they could do is have me unplug it for 15 seconds and restart. I think I saw better troubleshooting in the user guide...
    Well I have a genius bar appt for tomorrow so let's see what happens.
  4. 1ede2 thread starter macrumors newbie

    Sep 14, 2009
    Just wanted to report back because I dl'ed istat. My temps and RPMs are as follows;

    CPU fan: 3894 rpm
    Hard drive: 1601 rpm
    Optical drive: 4604 rpm
    North bridge: 108
    HD Bay: 93
    HD Temp: 95
    Optical drive: 88
    Mem Controller: 88
    CPU: 82
    ambient: 72
    CPU heatsink: 82

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