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21.5'' iMac - Screen Noise

95210 Views 467 Replies Latest reply: Jan 11, 2011 11:45 AM by brian_cooney RSS
  • Bill from Germany Level 1 Level 1 (70 points)
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    Oct 29, 2009 9:01 AM (in response to steve_lux)
    Just a thought, but would it be possible to unbox and test new computers in the store before taking them home? I'm reading many stories in this forum of people going through multiple machines trying to get one to their liking. Or do Apple stores or authorized dealers not allow this? Seems like it would save a lot of trouble and frustration all around.
    20" Intel Core Duo iMac, Mac OS X (10.6.1)
  • steve_lux Level 1 Level 1 (0 points)
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    Oct 29, 2009 9:04 AM (in response to Bill from Germany)
    My authorized dealer does that at this moment. I will pick up a new one tomorrow and they hopefully find one with no defect.

    If you need to buy one now I would definitely unbox it in the store!
    iMac 27inch, Mac OS X (10.6.1)
  • steve_lux Level 1 Level 1 (0 points)
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    Oct 30, 2009 1:45 AM (in response to steve_lux)
    My dealer checked and they all have the defect! I would be careful buying one now.
    iMac 27inch, Mac OS X (10.6.1)
  • iSkid Calculating status...
    Currently Being Moderated
    Oct 31, 2009 4:13 AM (in response to steve_lux)
    Yesterday I've got from my Apple Store the 3rd replacement and this iMac have the defect too!!

    3 of 3 the same defect!!

    I'm going to think that ALL iMac have the same defect!!

    And from Apple NO ANSWER!!
    iMac 21.5, Mac OS X (10.6.1)
  • steve_lux Level 1 Level 1 (0 points)
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    Oct 31, 2009 4:16 AM (in response to iSkid)
    I had Apple on the phone yesterday and they told me they are not aware of a global issue. But apparently some series have this problem. My store is currently checking if they can find one without the issue, until now they weren't lucky on that.
    Let us know what happens
    iMac 27inch, Mac OS X (10.6.1)
  • steve_lux Level 1 Level 1 (0 points)
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    Oct 31, 2009 9:11 AM (in response to derbyStar16)
    That's what Apple told me, you'll have to ask them what they mean by that.
    I will get more details on monday. Will keep you advised.
    iMac 27inch, Mac OS X (10.6.1)
  • swampystorm Level 1 Level 1 (0 points)
    Currently Being Moderated
    Oct 31, 2009 6:32 PM (in response to steve_lux)
    Hi guys. I am in the UK and I have notice exactly the same problem! High pitched whining sound decreased by reducing the brightness. Sound is quiet and you have to listen for it. This is my third Imac. Swapped one because of dust under the screen and one because two days later they released the 21.5". I really cannot be bothered to go back to the apple store. However, is this a problem that is going to get progressively worse?

    Also I see little point in trading it for a new one because you guys are from USA and Germany, meaning there must be 1000s of units affected. Also no one has managed to have the issue solved by swapping your machines?

    I think I shall be calling apple to make them aware about the problem and if they decide to officially recognise the problem and provide solution for it get it fixed then!

    Kind regards
    Adam
    Imac 21.5", Mac OS X (10.6.1)
  • xnay Calculating status...
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    Nov 1, 2009 1:15 AM (in response to derbyStar16)
    Hello!
    I'm from Vienna, Austria and got my new 21.5" iMac (bought in the Apple online store) on Friday. It has exactly the same problem as described in the first post. I will speak to an Apple Service Center here in Vienna next week ... let's see what they will do with my iMac ... This noise is not loud but it's really disturbing.
    iMac 21.5", Mac OS X (10.6.1)
  • Garciam_sa Level 1 Level 1 (0 points)
    Currently Being Moderated
    Nov 1, 2009 10:42 AM (in response to derbyStar16)
    Same problem here with my 21.5". At full brightness and the very lowest brightness settings, the sound goes almost entirely out of my range of hearing but in between, it becomes rather prevalent. It does not seem to be worsening though and I can imagine there are some people who don't even hear it at all due to loss of frequency range in their hearing with age.

    For the record, the Magic Mouse that came with my system makes a high pitched sound as well but only when you hold the bottom to your ear. Amusingly, it's when the green LED is on - if you cover the lens to shut off the green LED, the sound lessens/goes away.

    Message was edited by: Garciam_sa
    iMac 21.5", Mac OS X (10.6.1)
  • Humis Calculating status...
    Currently Being Moderated
    Nov 1, 2009 11:07 PM (in response to derbyStar16)
    I also have the problem with my 21.5". However, the noise level goes down when you rise the brightness, and it disappears totally if the brightness level is under half. I'm not sure if I should return this model. It does not seem as bad as it could be when reading other users problems.
    iMac, Mac OS X (10.6.1)
  • VeL1303 Level 1 Level 1 (0 points)
    Currently Being Moderated
    Nov 2, 2009 12:35 AM (in response to derbyStar16)
    Same here, its time for apple to officially recognize the problem. Any word on 27"? having that problem? Thanks.
    iMac 21.5", Mac OS X (10.6.1)
  • steve_lux Level 1 Level 1 (0 points)
    Currently Being Moderated
    Nov 2, 2009 12:38 AM (in response to VeL1303)
    Mine is a 27inch. Same problems. Wondering if I get a working machine today.
    iMac 27inch, Mac OS X (10.6.1)
  • jeremyanderson Level 1 Level 1 (0 points)
    Currently Being Moderated
    Nov 2, 2009 10:14 AM (in response to steve_lux)
    Just got a replacement and have the same issue as well. I got an upgrade though to the better video card, but still have the issue. Anyway... perhaps there will be a firware update some time for this. It doesn't seem to bother me all the much and I got the shades program that can dim the screen with no pitch problems!
    imac 21.5"
  • swampystorm Level 1 Level 1 (0 points)
    Currently Being Moderated
    Nov 2, 2009 11:18 AM (in response to derbyStar16)
    Hi I thought that would be the case.

    Has anyone noticed any backlight leakage when they have a fully black screen? I have two points at the top of the screen and when the screen is all black it appears a little grey?
    Imac 21.5", Mac OS X (10.6.1)
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