New iMac 27" making squeaking sound

Discussion in 'iMac' started by Juste, Dec 17, 2012.

  1. macrumors newbie

    Joined:
    Jan 30, 2010
    #1
    Hi

    Good news, I just received my new iMac early in Copenhagen, Denmark.

    Bad new, it makes a annoying squeaking sound. My best guess is, that is is the 1TB fusion drive (PPLE HDD ST1000DM003) making the sound. The sound is overpowering the fan, but not present when the drive is working hard.

    To illustrate i recorded the sound while turning blackmagic disk speed test on and off. You will clearly hear the noise when the test is not running.

    Listen to the sound here: https://soundcloud.com/justesen/imac-2012-squeaking-noise

    Have anyone experienced the same, or have a solution to this problem?

    BR
    Justesen
     
  2. macrumors 601

    Joined:
    Jun 29, 2010
    #2
    Hmm definitely not normal I've got a 1TB fusion and it is dead silent
     
  3. macrumors 603

    Joined:
    Mar 29, 2008
    Location:
    Seattle
    #3
    See this thread, - which sounds like the exact same issue:

    http://forums.macrumors.com/showthread.php?t=1509607

    Also see my reply there, which likely pertains to it. If you run something CPU intensive does the sound stop? If so, it's probably the processor entering that C3 state.
     
  4. Juste, Dec 17, 2012
    Last edited: Dec 17, 2012

    thread starter macrumors newbie

    Joined:
    Jan 30, 2010
    #4
    Correct. If I do something CPU intensive like the CPU speediest the sound stop and I can hear the disk working instead. -if it is the disk making the sound?

    I can't too much information in the C3 state issue. Is it fixable or should I try to get a replacement?
     
  5. macrumors 6502

    Joined:
    Nov 29, 2009
    #5
    "Do you hear it? It's a funny squeaking sound!"

    [​IMG]

    Sorry, but it's that time of year :D
     
  6. macrumors 603

    Joined:
    Mar 29, 2008
    Location:
    Seattle
    #6
    I don't think a replacement will fix it. Can't say though, since I haven't gotten my iMac yet to compare. You also might be more sensitive to that pitch of sound than other people, too. Your best bet is to go test one in a store. That said, to hear the noise in a busy store you may need to put your ear up against the casing. It's not the hard drive though, I still say. It's either the C3 idling state sound (google C3 whining sound) or the internal power supply. Still sounds like C3 to me.
     
  7. macrumors 6502

    Joined:
    Aug 25, 2010
    #7
    I'm in exactly the same boat, have you tried opening an app that uses the camera? (Photo booth). When the camera is being used it stops without fail. I think our problem is when the CPU is at idle, still looking for a fix...
     
  8. thread starter macrumors newbie

    Joined:
    Jan 30, 2010
    #8
    Hi Onimusha370

    I can confirm, that turning on the front camera does make the noise stop instantly!?!?! I still hear the HDD work, but no high pitch sound.

    It's wierd and very annoying!

    ----------

    i might be sensitive :) - but the sound is overpowering the fan and can clearly be heard 5 meters away. Can the C3 be that loud?
     
  9. macrumors regular

    Joined:
    Dec 12, 2012
    #9
    Exchange it. You spent to much money to tollerate that.
     
  10. macrumors 603

    Joined:
    Mar 29, 2008
    Location:
    Seattle
    #10
    I can't say. It depends how sensitive you are to it, potentially. Can you test an iMac in a store by putting your ear to it?

    Also, what processor did both of you in this thread with issues buy?
     
  11. macrumors 6502a

    Joined:
    Sep 3, 2009
    #11
    Sounds like a speaker issue that I had in my old MacBook Pro. Even when the sound was one mute, the right speaker would make a noise just like that. Not to say that that's what you issue is, but just throwing that out there.

    I would get it exchanged. You paid for a premium product. Expect perfection.
     
  12. macrumors 6502

    Joined:
    Aug 25, 2010
  13. macrumors 6502

    Joined:
    Aug 25, 2010
    #13
    Just listening to it some more, it sounds like the noise at the dentists, when you're having a 'scale and polish'. The sound of metal, scraping on teeth. Not nice :(
     
  14. macrumors 603

    Joined:
    Mar 29, 2008
    Location:
    Seattle
    #14
    Hey,

    Download this and tell me if the sound goes away when this is running. If it does, it really is the C3 idle issue..

    http://www.macupdate.com/app/mac/23935/cputest
     
  15. thread starter macrumors newbie

    Joined:
    Jan 30, 2010
    #15
    I will get it exchanged, if it is not easy fixable!


    I got 27" 3.2GHz Quad-core Intel Core i5, Turbo Boost up to 3.6GHz, 1 TB fusion drive

    Alright I'll try.
     
  16. macrumors 68000

    iMcLovin

    Joined:
    Feb 11, 2009
    #16
    Man that sucks! - I would replace it instantly!! If there's an annoying sound then they need to fix it. I bought a Wacom cintiq tablet in July, which had a high pitched sound from the cheap led lamps inside the tablet once the USB was connected (probably some cheap components). I refused to keep it, took them 5 months to get the parts to fix it. Last Friday (nearly 6 months after I bought it) I got a proper tablet. If I need to go through the same with apple ill do it. No way I would keep faulty hardware with this price tag. But I certainly hope I won't through the same again on another device :(
     
  17. macrumors G5

    Macman45

    Joined:
    Jul 29, 2011
    Location:
    Somewhere Back In The Long Ago
    #17
    I've setup and configured two of the new 21.5's both with Fusion...neither makes the noise. OP: I would get that at least looked at, preferably swapped out.
     
  18. macrumors 6502

    Joined:
    Aug 25, 2010
    #18
    Thanks for the link mate, I'll try it when I get home tonight
     
  19. macrumors 6502a

    Joined:
    Oct 24, 2007
    Location:
    Suffolk, UK
    #19
    Regardless of what people say, if you are not happy ask for a replacement. Apple can allow you to keep that unit until you get a replacement if you provide your card details and will collect the faulty unit within a few days of the arrival of the replacement unit.

    At least report it to Apple so they can build up a log of faults/issues, things will never get fixed if they don't know about them.
     
  20. thread starter macrumors newbie

    Joined:
    Jan 30, 2010
    #20
    New iMac replacement on its way from Apple.

    I'll keep you posted.
     
  21. thread starter macrumors newbie

    Joined:
    Jan 30, 2010
    #21
    Hi WilliamG

    I just ran the CPU test, and the second i pushed start, the noise stopped. When the test was finished, the noise started again!

    As i understand it, there is no way to fix this? other than of cause to get a replacement.
     
  22. macrumors 603

    Joined:
    Mar 29, 2008
    Location:
    Seattle
    #22
    There are ways to keep the CPU not idle, but it ups the CPU temperature. Something like this:

    https://discussions.apple.com/thread/461317?start=0&tstart=0

    Yep, C3 state whine. Yuck.

    I'll also say that the reason you may not be seeing too many complaints about this issue is that a lot of people either don't notice it, or have too much other noise in their iMac's vicinity (cars, fans, music etc) which drowns the noise out.

    In addition, your replacement will likely (not necessarily definitely - but likely) have the same issue. You'll then have to decide if you can live with it or not... I haven't had a chance to play with my new iMac yet, as I had to leave on a trip, and won't be back till next week. I'll notice immediately if mine exhibits this issue.
     
  23. macrumors 6502

    Joined:
    Aug 25, 2010
    #23
    mine did exactly the same, so annoying :(
     
  24. macrumors 603

    Joined:
    Mar 29, 2008
    Location:
    Seattle
    #24
    OK so it's the CPU idle state causing the issue. Now we need to find out if it's just Core i5 CPUs experiencing the issue, or is it i7 CPUs as well.
     
  25. macrumors 6502

    Joined:
    May 26, 2012

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