Imac screen flickering

So everyone now and then my iMac screen begins flickering at the bottom in and around the dock. It is noticeable enough to be annoying. Also with the new neon colors on the Apple site it goes crazy showing a bunch noise in the colors of the page. Is there a fix for this without me having to go the Apple store.

iMac (27-inch): AMD Radeon 6970M Video Card Replacement Program

Similar Messages

  • 2012 iMac Screen flickering

    I just bought a brand new, but previous generation 27" iMac a couple of weeks ago, and today I have begun experiencing some noticeable screen flickering.  It doesn't go black, and there is no yellowing.  I have read reports of past iMac flickering problems from 2010, etc, but haven't found much info on those bought in 2012.
    Aside from hauling the computer in for service, has there ever been a fix for this?  I have done all software updates that are available.  Worst case, I'll take it in, but I'm checking here first.
    Thanks for any help.
    2.7 GHz Intel Core i5
    4GB RAM
    AMD Radeon HD 6770M  512 MB

    I had screen-flicker and color-distortion issues on my mid-2011 27" iMac about two weeks back. The issue ended up being a bad video card (AMD Radeon HD 6790M 1 GB).
    If you are still in your buyer's remorse period, you can exchange your machine for another one. If not, you can always have it serviced for free under warranty

  • Does all imac screen flickers at low brightness?

    Hi, I just got the 21.5" imac.
    I notice there's this minor flickering problem at low brightness, is this normal?
    It seems like it's a known issue after I researched about it.
    Is it a hardware problem or a software problem?
    Should I exchange it?
    Thanks for the help!

    Welcome to Apple Discussions,
    No that isn't normal, call AppleCare in the morning the number is in your owners manual.
    Regards,
    Roger

  • 21.5" iMac screen flickering

    I've got an 21.5" iMac from mid 2010 that just started flickering after the update last week.
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    I tried booting up the machine with only 2GB RAM without any difference.
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    Contact Apple's Support, formerly Apple Express Lane and see what they say.

  • IMac 21" late 09: Slow, screen flickering/tearing and odd behavior - the problem that puzzles everyone

    PLEASE HELP!
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    NO, it's not the HTML-5 problem or any standard flash issue and using a different browser dosen't help!
    Worst is the fact that most of these errors are not constant! One day your watching youtube or mabey a movie in VLC, a bit laggy, but almost no problem. Next day **** brakes lose and after 2hours of struggling you are ready to stabb yourself in the face!
    What i tried: Most easy buggfixes that might cause the above problems, updating most things, Switched from OS X SL to OS X ML, complete reinstall and some things i probably forgot by now. Then went to MacStore for repair, they didn't find anything wrong and said it worked fine after the standard diagnostic/repair program!?! Went home and everything was the same! Went a second time to MacStore, same result.
    So I'v reinstalled a few times and it seems to improve the Mac. But 2-3weeks later every error is back, even if I barely installed or downloaded anything!?!
    Any idea what this could be? Or is the graphic card broken and MacStore has a blind, inbred muppet as a technician?

    No I didn't. The first time i explained the problem thoroughly and thought that they just couldn't miss such a visual error. I was wrong. The second time the technician wasn't there so i showed the above clip to the salesstaff and explained everything onceagain. Later the technician called me and we talked for 10min.
    Btw, the problems always "manifests themselves", just varies between strenght and frequence.
    But all other issues aside, what could cause the tearing of the screen as seen int the above clip?

  • IMac 10,1 screen flickers

    The screen flickers after I have been on the computer for 10-15 minutes.  Back in January, the hard drive failed and was replaced.  Is flickering a sign that the video display is about to die, or something less of a pain in the rear?

    Unfortunately I cannot help, but I have the same issue. What I observe is that it tends to get better the longer the machine runs, i.e. heat becomes it. From Leopard to Lion the iMac would not go to sleep ever, only display sleep (black screen), but the rest would be running. During that time I hardly ever had any screen flickering issues. Only when I booted up after a prolonged period of rest (the machine, not me). Under Mountain Lion it seems it's gotten past its insomnia. So I have frequent screen flickering, but after some 30 minutes of activity it tends to bget better. But I seem to observe a slow digression. That's all I can say. My Harddisk was replaced years ago by an Apple Store. I am wondering whether it's financially wise to bother with an old machine like that. But I hate to throw things away...

  • 24" iMac Silver - screen flickers

    Just pulled it out of the box today. I can't operate at anything less than full brightness or the screen flickers. I can't find any other posts on this one. I see a lot of other related issues. Anyone having this issue? Did it go away?
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    same for me, When I try and use the main system brightness control at the lower levels the display tends to have uneven strips that are lighter and darker.
    its like if the monitor turns on and off very rapidly, like high speed blinks, i use an app called SHADE, it dims the monitor (dont now how) the screen dont flicker anymore and its free
    http://www.charcoaldesign.co.uk/shades
    Unlike other solutions, Shades doesn't change your display settings, and won't screw up your monitor's colour profile.
    BY THE WAY, MAYBE ITS A PROBLEM RELATED TO THE FREEZING IMACS DUE TO THE ATI GPU
    fine app, right price

  • New iMac 27inch screen flickering/tearing/shutoff (continued)

    This thread is a continuation of [New iMac 27inch screen flickering/tearing/shutoff|http://discussions.apple.com/thread.jspa?threadID=22 12682]. The thread was becoming too long and was causing some browsers to time out. The older thread has been locked.

    citrus101 wrote:
    Hi Brett L,
    thank you for the coordination of this helpful thread. Are you Apple? If yes, please allow me to ask you three questions:
    1) The Display Firmware stopped for over 90% the flicker issue, but what has this Firmware changed exactly?
    2) Is Apple preparing a fix for the yellow tinge?
    3) When will it be save to buy a new iMac?
    Thank you for your efforts.
    Hello Citrus.
    Excellent questions.
    I hope that Apple will authorize Brett L. to provide us with some clear, honest answers to them . . . although, as I pointed out before, it would seem by the latest messages that have been posted in this thread -- that is, the *original thread* -- that through their actions, Apple has already provided us with their answer -- and solution -- to the yellow tinge issue; and that is the replacement of the LCD panel.
    As to what the most recent display firmware update did, I am doubtful that Apple will allow Brett to reveal that kind of information, but we can be hopeful.
    As far as when it will be safe to purchase a new iMac, I seriously doubt that Apple will say anything which would suggest that it is not safe to purchase a new iMac now. What company is going to say "Don't buy our product now. It's not safe"?
    For my part, I have now contacted Apple regarding the issues that I am having with my 27" iMac, and I will wait over the next few days to see how things play out. Based on the testimonies of others here, I don't expect Apple to disappoint. I have the confidence that they want to leave me a satisfied customer who will continue to purchase their products in the future.
    Message was edited by: Warren Beasley

  • Imac 24" 3 gig screen flickering

    over the last few weeks, my imac screen is flickering, and tonight quite bad, i thought it was going to go off at any minute, but after a while it seems to calm down with just the odd flicker. Ive heard story's of the inverters going down on these models, could this be whats happening? I work in IT as a technician, and the only other fault like this i have seen is on a Samsung V20 laptop (video link cable fault)
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    I think something like this should never happen on premium products like Apple computers. You dont want me going back to windows do you?
    unit is just over a year old, i have mac warranty, so its another trip back to the shop.

    These things do happen, they are a pain but at least you will get it fixed.
    Hope you get it back quickly.
    regards

  • Imac 2009 screen flickers in lion

    It's back!  Since upgrading to Lion, the infamous 27" 2009 iMac screen flicker has cropped back up.  Its not so often, and usually not too long after it wakes up.  Anyone else seeing this?  What to do?

    Actually, I've just noticed that it also flickers if I tap the right spot during the BIOS bootup (gray screen when laptop first turns on). Disabling the SMS in MacOS didn't make a difference, so I'm going to assume it's hardware and get that logic board that's troubling everyone else replaced...
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  • I have a late 2009 imac i am having issues with my screen flickering and getting dark

    i have a late 2009 imac  21 inch i am having problems with my screen flickering ND GETTING DARK DOES THIS MEAN THAT MY COMPUTER IA FAILING

    I have partly the same problem (Sceen blackening) sparodically.
    2010 iMAC  with I7 CPU and ATI Radeon HD 4850 512 MB Graphics.
    If I lower the brightness to around (3 or sometimes 4 of the on screen squares F2) the issue does not happen at all. I prefer a bright screen.
    The issue commenced immediately after instaalling OS X 10.8.2 update one year ago.
    The current software is  OS X 10.9 (13A603)
    The graphics on this computer are always first rate when working properly even at maximum brightness
    There are particular days and times when the problem routinely occurs.
    Some of my neighbors with iMacs have similar problems.
    I live adjacent to the City of London in an area where new building seems to be developing faster than the various utilities and there are known Power Network issues. Professional surge supressors make no difference.
    I live in a large property with four independent ring mais. The issue is present on all four rings. I have yet to take the computer elsewhere to possibly eliminate power issues from the problem.
    I am reluctant to replace an otherwise fine top of range iMac which otherwise serves me well since the same problems might be present.

  • IMac screen on start up flickers

    On start up the top half of my screen flickers for about 5 minutes and then goes to normal. Is there a setting to correct this or should I be looking at replacing the video card. I am running OS X.4 and it is the Summer 2001 DV 500 mhz processor. If I need to replace it I have an ATI MX4000 (AGP) with 128 meg and wanted to know if this would work. Also is there a reset function for the video card?
    Message was edited by: SnkEys990

    There is no physical video +card in a slot+ in the iMac, so you cannot replace it. The video chips are on the motherboard. The problem is probably not in those components anyway. If there is a video problem, it is more likely to be in the analog video board that controls the CRT. These iMacs are CRT monitors and computers rolled into one package, and the CRT-video portion is often the part that fails, not the computer-video portion.
    Here's something to check... Although the CRT of iMacs degauss when the iMac is started or restarted, this document
    http://docs.info.apple.com/article.html?artnum=25339
    says you should leave the iMac off for an extended period if it is continuously turned on.

  • My screen flickers on my imac 7.1

    My screen flickers on my iMac 7.1, I have had this issue for the past two years.  The screen has been replaced as well as some other hardware, I don't recall what exactly was replaced prior to the screen being replaced but once again it has returned.  I once again have video of it but can't get it to upload to here but will load to youtube to view there.  Any input is grately appreciated- thank you!
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    http://www.youtube.com/watch?v=sdwN-VjVncM&feature=youtu.be

    i called apple and they are sending me snow leopard so i should, *fingers crossed, be able to run the newer version of itunes. we'll find out for sure in a few days when it arrives

  • IMac screen has been flickering, does anyone know the problem?, iMac screen has been flickering, does anyone know the problem?

    Recently my iMac screen has started to flickering does anyone know the problem?
    Any help appreciated

    Bad power, unshielded speakers, improper hardware installs which lead to loose cables, can all cause this.

  • Flickering imac screen

    Two month old 27" iMac is flickering. How do I get this fixed?

    You have a 1  year warranty, take the machine into your local Apple Store or AASP. You also have 90 days of free AppleCare telephone support so call them!
    If you purchased AppleCare already then you can simply call them and they can work with you, if the flickering won't resolve with the resets they try they will give you advice on what to do. BTW if you have not purchased AppleCare it's not too late, you can buy it anytime within the first year of ownership. 366 days and it's too late. AppleCare will extend the warranty to 3 years, provide 3  years of telephone support and more. Most experienced users on these forums recommend it, if for no other reason than peace of mind. If a repair is needed, in most cases AppleCare more than pays for itself. In the US, the cost is $169, however it can be purchased for less from Amazon or B&H Photo or other Apple resllers if you do a bit of shopping. I paid $122 for mine at B&H.

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