24" iMac Started to Buzz!

I've had my new 24" iMac for about 2-3 weeks now, and it just started buzzing when taken down from full brightness.
Are there any other solutions to this problem other than sending it in for repair?
I don't yet have a big enough external HD to make a backup, so maybe i will just wait until i get one and have time to send it in. Should be covered, right?

On my machine the brightness buzz is unconnected to the tilting one. The noise caused by using the brightness controls is more of a hum and is completely avoidable with the use of Gamma Control.
The other noise that I get intermittently is more like the low drone of an insect's wings and is entirely mechanical in origin. When it starts I can eliminate it by tipping the display very far forward or back. With the screen in a more sensible position, I've found that the very slightest pressure, forward or back, on any side or corner of the display cuts the noise completely. It's as though the fan occasionally becomes misaligned in some way and the tiny degree of twisting is enough to correct it.

Similar Messages

  • Why does my imac start up in safe mode

    hi, imac starts up in safe mode. not every time,  only when progress bar appears at startup.
    I have had the Logic board replaced under warranty but it still started in safe mode.
    sometimes when it has started the wifi symbol is missing and no wifi, other times the sound is not there and the symbol is missing on the top bar.
    I then have to restart and it comes up good. sometimes the desktop top bar is not there until I press the mouse and then it appears.
    don't know what to do, any Ideas anybody?

    How often does this happen? Do you have automatic updating enabled in Software Update? If so, then it's possible those were firmware updates being installed, not startup in safe mode. In a safe mode startup you are initially prompted for your password before proceeding past login.
    If a firmware update was happening then the computer will restart on its own. If you interrupt the process then the update isn't installed, so it will try again on the next restart.
    Safe mode is initiated by holding down the SHIFT key at restart. It should not occur without user intercession.

  • My imac starts up with a white screen, gray apple and spinning gear and is frozen on that screen. What can I do?

    my imac starts up with a white screen, gray apple and spinning gear and is frozen on that screen. What can I do?

    Start your iMac with the original DVD that camera with the system.  Then open disk utility and repair your hard drive, also repair your permissions. 

  • Sometimes my iMac starts with white lettering across the screen on a black ground and after switching off for a few seconds starts on ok ! Any ideas

    Sometimes my iMac starts up with white lettering acrossthe screen on a black background - when it's switched off for a few seconds it starts up ok. Can anyone tell me why this happens ?

    I have read on here that a PRAM reset can cure this problem:
    Shut down your Mac.
    Locate the following keys on the keyboard: Command (⌘), Option, P, and R. You will need to hold these keys down simultaneously in step 4.
    Turn on the computer.
    Press and hold the Command-Option-P-R keys before the gray screen appears.
    Hold the keys down until the computer restarts and you hear the startup sound for the second time.
    Release the keys.

  • My imac starts with a white screen, then goes black and a small white line just blinks in the top left corner of the screen?

    My imac starts with a white screen, then goes to black with a small white line blinking in the top left corner of the screen. Any ideas? Thanks.

    Try starting your iMac with the original DVD that came with the machine then launch disk utility to repair your hard drive. 

  • Hello. When I connect my imac Start, as usual, comes the start signal and then the white screen with the load signal then nothing happens. What could be the problem?

    Hello. When I connect my imac Start, as usual, comes the start signal and then the white screen with the load signal then nothing happens. What could be the problem?

    Presuming you get the chime, most of your Mac hardware is working and has passed the first part of the power-on self-test.
    If the screen comes on, basic graphics is working.
    The dark gray Apple is not present inside the Mac -- it must be loaded from a boot device. If the dark gray Apple appears, at least one of your boot devices has some capabilities. The flower petal/gear moves while Darwin is initializing and loading. If it stops immediately, something is terribly wrong.
    When the screen turns blue, Mac OS X has loaded and your graphics card transitions to Interrupt-driven operation. LoginWindow task draws the login screen, and Mac OS X is ready for login.
    What could be the problem depends on where in the process it stops, and whether the power light is blinking.

  • Why my imac start with question mark sign on gray screen

    need help with imac start up

    Click here and follow the instructions. If the computer was running Mac OS X 10.6.8 or earlier and you reach the third set of steps, insert a Mac OS X install disk.
    (111966)

  • How to turn off sound when iMac starts up

    how to turn off or turn down sound when my imac starts up

    debrafromusa,
    This would be an extremely bad idea, the start up tone is there for a reason. It tells you when your system is attempting to  boot, it is also necessary in the even resets like a PRAM reset are done. There is software to mask the sound however as stated it is a very poor idea.
    Also, why turn it off. Why not simply put the display to sleep when the machine is not in use. You can easily do that in System Preferences - Energy Saver

  • My iMac started and locked onto a white screen. Rebooted and all was well. How do you do a safe start i.e. what key do you press?

    My iMac started and locked onto a white screen. Rebooted and all was well. How do you do a safe start i.e. what key do you press?

    It should according to http://support.apple.com/kb/ht1455. Review that and try again.

  • IMac starts shows white screen and shuts off

    my iMac starts fine, I hear chime, white screen with apple shows, but also shows a bar under the apple...
    it stays on a minute then shuts off...

    It's most likely the macbook pro 2011 denied by apple GPU problem many many others suffer from too.
    you can read about it here if you have a few days.
    2011 MacBook Pro and Discrete Graphics Card:
    https://discussions.apple.com/thread/4766577
    728 Pages long allready, still no repsonse from apple.

  • IMAC starts up w/ tone, then white screen , then 1 min later grey apple - nothing else. When I boot up holding shift, no tone, white screen, grey apple, then 1 min later prohibitory sign and pinwheel ...

    IMAC starts up w/ tone, then white screen, then 1 min later grey apple - nothing else.
    When I boot up holding shift, no tone, white screen, grey apple, then 1 min later prohibitory sign and pinwheel ... nothing else ?

    Tried disabling everything USB and FireWire and the Likes

  • Last week I've install Mac OS X Mountain Lion and then after the installation finish my IMAC start up in verbose mode. How can I turn off this mode and start my IMAC normally. I've try to key in the code "sudo nvram boot-args=" in terminal also.

    Last week I've install Mac OS X Mountain Lion and then after the installation finish my IMAC start up in verbose mode. How can I turn off this mode and start my IMAC normally. I've try to key in the code "sudo nvram boot-args=" in terminal also.
    Thank you for all of your answer.

    I've seen it mentioned on here that a PRAM reset may solve it:
    Reset PRAM
    Shut down the computer.
    Locate the following keys on the keyboard: Command, Option, P and R.
    You will need to hold these keys down simultaneously in step 4.
    Turn on the computer.
    Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
    Hold the keys down until the computer restarts and you hear the startup sound for the second time.
    Release the keys.

  • IMac starts up by itself

    my Intel iMac starts up by itself for no apparent reason after it was shut down
    using the shut-down command in the Apply drop-down menu. When I come
    back some time later I find it is running and I shut it down again - only to find it running again when I return to the room the next time. This does not happen
    when I shut it down using the power button on the back.
    I have already done a SMC reset and have thrown out some plist preference
    lists (as Apple recommended) It has made no difference.
    It would be quite simple to always use the power button to shut it down - but
    then I find that Elgatos EyeTV will not start the computor when a program is
    scheduled for recording. Yes I have checked the Energy Saver to make sure it
    is not set for automatic turn-on.
    Yes I have also checked EyeTV to make sure that nothing is scheduled for
    recording.
    I am just over the 90day free Apple phone support and they now want payment for further help.
    Looking for some good suggestions,
    Walter
    iMac (Intel core duo)   Mac OS X (10.4.9)  
    iMac (Intel core duo)   Mac OS X (10.4.9)  
    iMac (Intel core duo)   Mac OS X (10.4.9)  

    Hi Denis and everyone else,
    on Saturday I completely de-installed the EyeTV software and pulled all cables out after shutting the iMac down with the Apple pull-down shut-down comand.
    It made no difference, the iMac turned itself back on.
    On Sunday I followed your suggestion Denis and looked at the Energy Saver.
    The "RESTART AUTOMATICALLY AFTER ...." was always unchecked. The
    "ALLOW POWER BUTTON TO SLEEP . . . " function was checked and I unchecked it.
    From then on the iMac no longer turned itself on (using the shut-down comand) - except when a program was scheduled to be recorded in EyeTV
    the computer is still turned on at other times before the scheduled time.
    This Monday morning I followed iMac973s suggestion and deleted the Wakein
    file also, only to find that EyeTV was no longer able to start the iMac to record
    a scheduled program - it missed the start time and I started the computer myself. EyeTV refused to open, it asked for the admin/authorization to install
    something - which was the Wakein file . This file is back where it was before
    and I believe EyeTV can't operate without it (maybe iMac973 can confirm this)
    (Wakein file is an exe file. I always thought that such exe files only exist in Windows Oper/systems.)
    To summarize,
    a part solution for me is to have the Energy Saver set as you suggested Denis
    and then the iMac won't turn itself on any more. The task of recording TV programs would have to given back to the old video recorder which means that taped programs have to be watched on an old CRT televion set (no fun).
    I am more happy today but still confused,
    best regards
    Walter
    Message was edited by: Walter Haenel

  • I am having problems getting my imac started.

    I am having problems getting my imac started. It begins to load, takes along time, then shuts down.
    I do not have a disk either to re install the platform.
    Any ideas on what I could do or try?
    I tried to start it in recovery mode. I pressed the shift key, held it, tapped it.....and I could not get it to register.
    The computer carried on trying to load with the loading bar displayed.
    Does this suggested, Internal HD failure?

    Thanks for replying Paul.
    I ran check as suggested.
    Seems to be ok.
    Still no change with the start up issue.
    ("Do I have back up to restore from?") Possibably , not sure.
    Any other suggestions would be welcome.

  • IMAC start issues: black screen and required to enter EXIT.

    At iMAC start I get black screen with Root directory and requested to enter EXIT to continue. This happens very frequently. Can somebody help me to solve this issue? Thanks

    I would suggest booting from the Recovery partition, choosing Disk Utilities, then running Repair Disk and Repair Permissions.  See if that clears this issue.
    Others may have suggestions, but if the above doesn't work you may need to reinstall Mountain Lion...again, from the Recovery partition.

Maybe you are looking for

  • My steam won't launch ever since I updated to Yosemite I don't know what is going on.

    Whenever I try to launch it, it says "Steam quit unexpectedly" I have tried redownloading it 5 times and have every software up to date. I also have tried deleting all my steam files and it still doesn't work. Here is a screenshot: I also downloaded

  • How do I get to a certain playlist on the shuffle?

    How do I get to a certain playlist on the shuffle?

  • Error in sales order saving

    hi Gurus i have  single problem related with sales order. while i saving the sales order it gives dump error. error details. Maintain the current CRM release (table CRMPAROLTP) Diagnosis    Various transfer errors occur when transferring SAP sales or

  • Many small black and white dots on LCD

    I bought macbook pro 2 months ago, the 2.33 ghz core 2 duo wid 2 gig ram and ATi Radeon X1600 xt gfx card. Recently i noticed small black and white dots cluttered in one place. The rest of the screen has about 7 - 8 independent dots, I feel as if the

  • Unable to sync iPhone 3G to iTunes 10.5.0.56

    Never had any problems syncing until recently. My computer crashed and had to get a new one. Computer guy transfered data from old to new computer. I think that he probably updated my version of iTunes to 10.5.0.56, but can't say for sure. Now I am u