emac 1,25GHz is too loud - turn off the fan?

Discussion in 'PowerPC Macs' started by Joshnah, Jan 2, 2008.

  1. macrumors newbie

    Jan 2, 2008

    I have an eMac (G4 1,25GHz) which is quiet well but the fan is much too loud. It sounds like a vacuum cleaner. :D

    I have already read a few articles about reducing the fan tempo but maybe you don't need a fan at all?

    What average temperature should the emac have?
  2. macrumors G5


    Jun 27, 2007
    If you are running Leopard, you might want to try
    - Reset PMU (SMU on newer machines)
    - Reset PRAM

    I sold an iMac G5 1.8/2gb RAM recently. Clean install with leopard, and the fans spins annoying high. Did above, fans aren't spinning as high, but still higher than 10.4. So reverted to 10.4 and sold without a problem.

    If not software issue, then google: emac fan replacement, replace emac fan or something like that

    I remember seeing a number of articles back in the eMac era. Example:
  3. macrumors 68000


    Jan 18, 2005
    You do need a fan if you're going to avoid cooking your eMac ;)

    My wife used to have an eMac, which lived in our bedroom and was on continuously. I don't recall it ever being noisy, but it may be that the bearing in the fan is going and causing all the racket.

    A replacement fan shouldn't be hard to source - the only problem is fitting it, as eMacs are a bast**d to get into (dangerous, too - there's an awful lot of voltage floating around that CRT screen).

    If you really know what you're doing, then you'll find a take-apart guide HERE, but be warned - it's not for the faint of heart. Otherwise, see if you can find a friendly Apple dealer with a service dept...
  4. macrumors member

    Jun 26, 2007
  5. macrumors 65816


    Apr 22, 2003
    You need the fan otherwise the CPU will overheat. However, you can slow it down considerably using resistors or a Zalman fanmate which will make it MUCH quieter and will still function normally. I lowered my 1.4ghz eMac's fan line to around 5-7v (I forget which) and it still worked perfectly and was a great deal quieter.

    Just for the record, if I stopped the fan blades from spinning, the eMac would crash after about 5 minutes. So yes, it needs a fan.

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