2012 iMac (27") noise (especially when scrolling)

Discussion in 'iMac' started by -Crimson-, Apr 25, 2013.

  1. -Crimson- macrumors newbie

    Joined:
    Apr 25, 2013
    #1
    I've gotten my iMac 3 weeks ago and im loving it except for this weird noise that I dont know to describe, I can hear it sometimes when its really quiet but it gets very noticeable when I scroll

    from what I know:

    -Its defiantly not the fan
    -Its probably not the cpu (ran some kind of CPU test app I think)

    I have an SSD so it probably not it either (SSDs are silent right ?)
     
  2. Andrew*Debbie macrumors member

    Joined:
    Nov 6, 2010
    Location:
    North Wales, United Kingdom
    #2
    Could it be coming from the speakers or ??

    Do you have a radio nearby? Maybe the radio is picking up signals from the mouse.
     
  3. -Crimson- thread starter macrumors newbie

    Joined:
    Apr 25, 2013
    #3
    nope can hear it even when the I mute the sound
    and I dont have any radios
     
  4. myuserid08 macrumors 6502

    Joined:
    Mar 15, 2008
    #4
    Is it high pitched ?

    Probably the GPU - it will work extra hard when scrolling through pages.
     
  5. -Crimson- thread starter macrumors newbie

    Joined:
    Apr 25, 2013
    #5
    its not high pitched
    and would the GPU work hard when its not a graphic extensive site
    because I can hear it on all sites
     
  6. eattherich macrumors 6502

    eattherich

    Joined:
    Jul 8, 2011
    Location:
    Berlin
    #6
    Can you give us a little more than weird noise? Is it comparable to another noise? Some people have reported issues with the latest iMacs where there's a quiet static-type noise coming from the lower corners of the screen. A little more information from you, if it's possible, might help get a better response. I hope it gets sorted, whatever it is. :)
     
  7. -Crimson- thread starter macrumors newbie

    Joined:
    Apr 25, 2013
    #7
    I'd say its close to a quiet static-type noise, also forgot to mention that it gets worse (louder) when I raise the brightness.
     
  8. AngelGuy7 macrumors regular

    Joined:
    Nov 9, 2006
    Location:
    New York
    #8
    I had the exact same problem as you describe. It would almost always happen when I scrolling but also when I was moving windows on the screen. I'm not sure if it's the GPU or the display itself (perhaps when changing the state of the pixels?).

    I went through 4 units that had this and image retention issues (and a few other minor issues) before finally giving up and getting a full refund.

    It's interesting though, now that I think about it. Some people say that image retention can sometimes be caused by a bad electrical component on the display (I'm not a electrical engineer of any sort so pardon my oversimplification). And the sound that I encountered and you describe certainly sounds electrical in nature (it's almost a soft whine). Perhaps it's not the GPU and it's related to the display?
     
  9. eattherich macrumors 6502

    eattherich

    Joined:
    Jul 8, 2011
    Location:
    Berlin
    #9
    If that's the case, have a look at this thread.
     
  10. Arfdog macrumors 6502

    Joined:
    Jan 25, 2013
    #10
    It goes away after a while.
     

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