Strange clicking/popping coming from iMac late 2012

Discussion in 'iMac' started by bsen4961, Dec 30, 2012.

  1. bsen4961 Guest

    Jun 28, 2012
    Has anyone noticed a popping sound / clicking coming from their 27" late 2012 imac at all?

    It is not rhythmic so does not appear to be hardware related (hard drive, fan etc..) however it does sound like its the case creaking. Has anyone else noticed this?
  2. iMcLovin macrumors 68000


    Feb 11, 2009
    Mine is completely silent - as how it should be ;) So, unless APple has a hotfix for it, I´d complain.
  3. auwkeung macrumors member

    Apr 8, 2008
    Mine doesn't experience the sound you mentioned
  4. Hitchophilia macrumors member


    Feb 24, 2010
    I have. I would describe it as an electrical discharge, similar to a plasma screen switching from white to black, alternating between the left and right bottom side. I thought it may have been the speakers, or the screen warming up, or the cpu in power save mode.

    I haven't been able to reproduce it, and it seems to come on at random times.
  5. iMcLovin macrumors 68000


    Feb 11, 2009
    Oh that clicking sound...Yeah I´ve had that once. It happens once in a while. Same with my 2009 iMac, happened with that one also once in a while. I doubt that´s anything bad. But, if it happens constantly, then I would worry. But once in a while I think happens on all iMacs. I don´t know what´s the reason though.
  6. bsen4961 thread starter Guest

    Jun 28, 2012
    I took mine into apple and they explained it should be silent apart from the regular sounds of fans and hard drive. They believe it was the speakers. I returned it and got a replacement. Ill let you know if this one does it.
  7. harlex macrumors member

    Nov 23, 2011
    At least you know you are not deaf f (another innovation from Apple !!)

    You could have bought a PC and thought that is how it should be. But for how much you paid for the iMac you sure are getting your monies worth.
  8. Gelite55 macrumors regular

    Dec 12, 2012
    Don't listen to the poster above. Just take it back or call Apple.
  9. avatar0 macrumors newbie

    Jul 23, 2009
    I have this. I think I've tracked it down to the display. It seems to happen when the display wakes up, turns off, dramatic increase/descrease in brightness. It might have something to do with the LEDs causing the display to heat/cool making something expand/contract causing the noise.

    It doesn't look like it's electrical since it also happens when I turn off the mac completely.

    I plan to call and get a replacement sent out.
  10. Apple fanboy macrumors Penryn

    Apple fanboy

    Feb 21, 2012
    Behind the Lens, UK
    Mine is silent all the time. I can just about hear the fan if I try and hear it. No noise from the screen when it wakes or sleeps though. Sounds like you have a faulty one. Get it swapped out now if I were you.
  11. bsen4961 thread starter Guest

    Jun 28, 2012
    Is yours a 27 or 21 inch machine?
  12. Hitchophilia macrumors member


    Feb 24, 2010
    Please let me know if you fix the problem with a replacement. I'm undecided if I should return mine because it's perfect othewise. :)
  13. bsen4961 thread starter Guest

    Jun 28, 2012
    My replacement does the exact same thing. I'm sure it's normal, I wouldn't trust every thing a retail store says when they say it should be silent. It was only a shop assistant that said it.


    My replacement is free of light bleed which my other one had. No yellow tint either. I know enough to say if your current imac only has this strange clicking which im sure all 27 " imac have (due to the fact that the people here who are saying there's is silent seem to have a 21") I wouldn't bother replacing it. Id hate to get a replacement imac with the strange clicking and other problems when Ur one is perfect.
  14. Hitchophilia macrumors member


    Feb 24, 2010
    Thank you for that feedback bsen4961. I was hesitant to return it, given I haven't been able to replicate it and that it's happened less than 5 times so far.

    Happy to hear your new imac is even better than your last (new) imac :).
  15. Nightarchaon macrumors 65816


    Sep 1, 2010
    I am glad for you early adopters, finding out these problems now, so that i can avoid them.. i bought the late 2011 iMac when i found out about the change in case design for the 2012 model, ill always avoid apples 1st gen of a new design, because they always seem to have problems, ill probably pick up one of these late 2012 iMacs towards the end of 2013, once all the faults and failures are out of the way and apple re-tools to fix them.

    to you 1st gen pioneers, i salute you, suffering the failures and inconvenience so those that follow may have a smooth experience.
  16. amfuller macrumors newbie

    Aug 21, 2012

    Brought my late-2012 27" iMac just before christmas - and delivered just before - and returned it just after, for the same problem you had: clicking/pop sound that moved from left to right, and back again; would do this randomly and increase just before power saving kicked in, and after i awake it.

    My replacement imac arrived today - no stock here in the UK, and thus it was shipped from china direct - and this replacement has the same problem, but a little different: same click noise but hardly ever happens, and it cannot be replicated by putting computer into power saving mode or through awaking it. I have reported to apple that I'm disappointed, but i will be keeping this replacement as the noise is much less than before.
  17. 2bcool2 macrumors regular

    Jan 31, 2008
    some advice... call apple ask for credit back as gesture of good will .... you will be very happy :)
  18. FreemanW macrumors 6502

    Sep 10, 2012
    The Real Northern California
    I'm sitting here with my new 27" (3.4GHz i7, 3TB Fusion) and can barely hear the soft whisper of the fan.

    Any clicking I hear is the magic mouse--but only when I press it, I can replicate the noise at will.
  19. AndiS. macrumors regular

    Dec 16, 2012
    Yes, I had also started a thread about it. Apple wasn't aware of the issue when I called in, so I asked for a replacement, because I found the noise quite startling at times.
  20. shaine83 macrumors newbie

    Jan 10, 2013
    Devon, UK
    Hi I have the same thing on my 27" and have just received a replacement and its the same. I describe it as a static noise mostly coming from the bottom left and every so often alternates from left to right and back again and is more noticeable when you put the display to sleep and wake up.
  21. SchneiderMan macrumors G3


    May 25, 2008
    Me too, it only happens in the lower right corner though. Late 27" iMac with Fusion Drive. Just got mine today and noticed the odd sound. I think it's the hard drive pin, but it sounds more like electricity or something similar.
  22. belito macrumors newbie

    Feb 18, 2013
    Dear bsen4961,

    Do you mean this noise?

    Attached Files:

  23. belito macrumors newbie

    Feb 18, 2013
    Hi guys, I'm a newbie in this forum. My native language is Spanish, so apologies for my use of English. :)

    I received my brand new imac 27' late 2012 last 22th January and after dealing with the humming sound due to the resonance effect with a cheap ikea desk, I decided to move it to another table, placed in a lighter room. At this moment, I noticed the weird clicking/popping noise in a random fashion that appeared to come from the bottom part of the screen and which seemed to move from left to right.

    After many tests, I thinnk it is caused by the screen glass itself due to the warming of the display. This is the reason why I didn't realize before, when it was placed in a darker room. In that place, the dimmer was very low and the screen barely made those sounds, so they were almost not noticeable. But when in a lighter room, the "Orchestra" began.

    I've arranged an Apple Support appointment and they are going to call me this afternoon. I was thinking on asking for a replacement but I'm not pretty sure about it because other people said their replacement units made exactly the same noise and don't want to assume the risk of receiving a unit making the same clicking noise and with an extra defect like dead pixels or so.

    This morning I realized that if you gently press the black part of the glass in the near down left or right corners, you can reproduce the noise, even it stops for a while. As I said, I think it is caused by glass dilation cycles, and increases when the dimmer is set high or when the screen is in resting mode.

    Anyway, it's quite annoying for a very expensive machine which should be perfect.

  24. Binarymix macrumors 65816

    Nov 1, 2007
    Mine had this noise after I first got it, but it seems to have gone away.

    I believe it's the adhesive tape holding the screen that is expanding/contracting.
  25. WilliamG macrumors G3

    Mar 29, 2008
    So funny! Why is it that so many non-native English speakers come onto the forums and the first thing they do is APOLOGIZE! If only we should see such apologies from the so-called ENGLISH speakers!

    belito, your grasp of the English language is fantastic. Never apologize again, EVER!

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