Flash Fan Speed Issue

Discussion in 'iMac' started by Loramarthalas, Apr 14, 2011.

  1. Loramarthalas macrumors member


    Aug 7, 2010

    For a few weeks now, every time I watch a flash movie or visit a flash-intensive website the fans on my 2010 iMac 27 rev up to full speed. They stay at max even after the iMac has cooled down.

    Is this a known issue? I've googled it a bit but I havent had any luck with a solution. Short of removing flash altogether, do you think there is anything I could try?

    Putting the iMac to sleep or shutting it down resets the fan, but restarting doesnt. It's weird.
  2. dxr808s macrumors member

    Mar 10, 2011
    Man, my mid-2007 HATES flash ever since I installed SL. Did okay with 10.5, but it still had its problems.

    I didn't think it affected recent machines as well.

    I hate to be a conspiracy theorist, but given the whole adobe/apple fiasco with iOS, maybe one or the other are purposely causing something to happen when flash is loaded.
  3. Loramarthalas thread starter macrumors member


    Aug 7, 2010
    Just to update; looks like the fan speed issue happens now whenever a cpu/gpu instensive task starts up. At first it was just flash, but now games and applications will trigger the fans to go full throttle.

    Could it be a faulty heat sensor? Applecare might be my next port of call.
  4. aristobrat macrumors G5

    Oct 14, 2005
    CPU/GPU intensive tasks create heat, which triggers the fan. That part is normal. However, after things have cooled down, the fans should throttle down.

    If you haven't already, you might consider installing the iStat Pro dashboard widget. It will show you the temperature of various internal components, as well as the fan speed.

    You also might try resetting your iMac's PRAM. That sometimes helps with weird symptoms.

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