Weird noise coming from the fan. Cant do anything about it.

Discussion in 'iMac' started by bron0, Aug 25, 2010.

  1. bron0 macrumors newbie

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    #1
    It started making noise 5 days after i bought it i don't know if it is normal so i took it to the apple store. they said that they did not detected anything. so had no reason to fix. plus since i bought it from pc connection express they cannot replace it. now the noise is getting louder and i don't know what to do
     
  2. spinnerlys Guest

    spinnerlys

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    #2
    Use iStat Pro to monitor your fans and report back.
     
  3. bron0 thread starter macrumors newbie

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    #3
    ok
     
  4. bron0 thread starter macrumors newbie

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  5. Serif macrumors regular

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    #5
    Does the noise change when you change the fan speed manually with the iStat software? Just trying to make sure that this is indeed fan noise you're hearing.

    Also can you try and describe the noise. Does the pitch of the sound vary?
     
  6. spinnerlys Guest

    spinnerlys

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    #6
    What do the ODD and HDD fans spin at?


    Doesn't only iStat Menus 3 do that?

    OP, you could also use SMC Fan Control for adjusting the fan speeds.
     
  7. bron0 thread starter macrumors newbie

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    #7
    The noise is a buzzing noise and i am pretty sure it is the fan noise beocuse as soon as i turn it on you can hear a loud noise coming from the fan area
     
  8. bron0 thread starter macrumors newbie

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    #8
    HDD spins at 1099 rpm
    ODD 998 rpm
     
  9. byron_hinson macrumors 6502

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    #9
    Electrical or sound of the fan knocking against something?
     
  10. bron0 thread starter macrumors newbie

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    #10
    Electical
     
  11. byron_hinson macrumors 6502

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    #11
    Top Left i bet? Likely the PSU and not the fan if so
     
  12. Serif macrumors regular

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    #12
    That's what I was getting at when asking to vary the fan speed. If the noise doesn't change when the fan speed does then one of the transformers (main PSU, left hand edge, or screen step up transformer, upper edge) is what I'd begin to worry about.
     
  13. bron0 thread starter macrumors newbie

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  14. Serif macrumors regular

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    #14
    Can you download some software such as SMC fan control or iStat Menus that allows you to vary the fan speed on your computer? Let us know if changing the fan speed changes the noise. If not then I suspect one of the transformers may be on the way out. If that's the case then I'm afraid it will need replacing.

    If fan speed changes the noise then it's a different problem and there may be some other things we can suggest that will solve things for you.
     

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