iMac 27" pitch noise top left

Discussion in 'iMac' started by lynxdeb, Oct 29, 2009.

  1. lynxdeb macrumors member

    Joined:
    Mar 29, 2009
    #1
    Hi guys,

    i've received my new iMac 27" yesterday, but I can only use it today because I was away from home for a business trip.

    The computer seems perfect, no hw defect, no bad pixel except for a very bad sound that is coming from top left corner..

    this sounds (like whine on first macbook, but more louder) appear when display is off or with brightness at 1/7.

    I've request an exchange, hope the new one doesn't have this annoying problem, has anyone the same problem? Repet, my iMac doesn't have flickering issue, only this annoying noise (maybe the psu? on the iFix teardown is on top left corner..)

    Thanks :)
     
  2. OG-C macrumors newbie

    Joined:
    Oct 30, 2009
    #2
    Yup, I´ve got the exact same thing. As soon as I rest my display the noise appears. Top left.
     
  3. lynxdeb thread starter macrumors member

    Joined:
    Mar 29, 2009
    #3
    In which week was your iMac built? Mine was 40 week.. hope the new one is more recent (about 42/43 week)
     
  4. jmonfire macrumors member

    Joined:
    Oct 28, 2009
    #4
    ??

    how do u know the week in which it was built?
     
  5. lynxdeb thread starter macrumors member

    Joined:
    Mar 29, 2009
    #5
    it's inside the serial number.. WXX40XXXXXX, the number should be the week..

    also the 40th week of this year is the first week of october :)
     
  6. tcmacintosh macrumors regular

    Joined:
    Feb 5, 2008
    #6
    same with my imac built week 41. Has the noise on the top left. Should I return it?
     
  7. lynxdeb thread starter macrumors member

    Joined:
    Mar 29, 2009
    #7
    oh.. damn :(

    my hopes that new one will be "perfect" are very low.. :(
    maybe i'll ask a full refund, isn't acceptable a 1500€'s pc has this stupid defect :mad:
     
  8. tcmacintosh macrumors regular

    Joined:
    Feb 5, 2008
    #8
    yeah, I think I'll return it an order the quad version. Maybe as it is shipping later it will have the problem fixed.
     
  9. RaginKajun macrumors newbie

    Joined:
    Nov 3, 2009
    #9
    My 27" iMac has a buzzing noise that comes in waves of about 7 seconds each, building to a crescendo and then fading again. Each wave is about 7 seconds long with a 2 second lull between waves.

    It is not LOUD, but loud enough that after a while I have to play music to drown it out and avoid insanity.

    Anyone else?

    bbzzzzzZZZZZZZZZZZzzzzzzzz......bbbzzzzzZZZZZZZZZZzzzzzzzz...bbzzzzZZZ
     
  10. zooromanc macrumors newbie

    Joined:
    Nov 12, 2009
    #10
    Same here.

    Exactly the same issue.

    Mine is from week 43. I'm returning it.

    Too bad, apple.
     
  11. SydneyDev macrumors 6502

    Joined:
    Sep 15, 2008
    #11
    The review model on AppleInsider.com had the same issue (top left whine).
     
  12. Donv macrumors newbie

    Joined:
    Nov 12, 2009
    #12
    I have the same issue. Top left is humming when the screen dims.
     
  13. nando2323 macrumors 6502a

    Joined:
    Aug 15, 2007
    #13
    It's funny how people are calling this an issue. Are you serious? It's an electronic piece of equipment it will make humms, pitches, sounds it's just the way it is. Like someone oh I can hear the hard drive, yeah well it's a mechanical hard drive so it will make noises, or I can hear the fan well it's a FAN!! People need to stop being so nit picky about stuff good God. Just my 2 cents sorry about the flaming but I think it's just something stupid to be worried about.
     
  14. sfmountainbiker macrumors regular

    Joined:
    Oct 21, 2009
    #14
    So this is a 27" C2D issue? Anyone with a quad-core experiencing this?
     
  15. nando2323 macrumors 6502a

    Joined:
    Aug 15, 2007
    #15
    LOL... Good luck finding a computer that is completely silent.
     

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