Display problems with iMacs

I have read several posts on problems with some displays  on the iMacs,some with white screens etc. I found a firmware update
http://support.apple.com/kb/TS3207. found it by reading some posts at Mac Rumors. I hope this may help with some of the problems.

There's a long thread covering the yellow tinge problem. Worth looking here:
http://discussions.apple.com/thread.jspa?threadID=2218213&tstart=0
With regard to the no capital letters light on the keyboard have a look here:
http://discussions.apple.com/thread.jspa?messageID=10735566&#10735566

Similar Messages

  • Weird display problem with iMac 24"

    Hi guys, I have a very weird problem with my 24" iMac. For some reason it seems that after approx. 10 minutes using the Mac, whenever I keep a window on top of another window and then I minimize it, it keeps there like a ghost for another 5-10 seconds until it fades away slowly slowly.
    Sometimes it's hard to see it however it's very evident when using a white window (such as Safari) on a dark background (not black).
    I'm attaching an image split into 2 parts, the 2nd part is shot exactly after I minimised the browser. It clearly shows a faded ghost image on the grey Photoshop canvas.
    Here's the pic:
    http://www.neilazzopardi.com/imac.jpg
    Has anyone ever experienced a problem similar to mine? or am I getting paranoid?
    By the way, I bought this Mac, 5 months ago and I don't know whether this problem has been there from the beginning but I only noticed recently while cropping in Photoshop and still seeing the parts I removed away very faded.

    den.thed it's not that I took it the wrong way or anything but shouldn't I be doing whatever I like with my iMac?
    For the record that is a dark grey Photoshop canvas, which just happens to show the problem much more evidently.
    The problem is that it happens on any background (even desktop) with any window, even Adium etc. Their ghost just stays there for a while... I use the iMac for design purposes and it's very annoying especially when cropping a picture and what I just cut out stays there very faded...

  • Problems with iMac retina 5K (artifacts, glitches and etc.)

    Hello dear Apple.
    I have bought new iMac with retina 5K display and I have found lot of problem with it. It was December 2014 when I got my first iMac. And after then I have found few real problems with it.
    The first problem is I can't open high resolution image with standard Preview.app. I mean 'high resolution' - more then 30-40 megapixels. When I open them, I can see image, but only 2-3 seconds, and after that I see horizontal artifacts only. I can't open images, like this Rembrandt.jpg; Carpaccio.jpg; Holbein.jpg
    The second problem, when I change resolution in to scaled mode (System Preferences/Display) for increase image on display. I found when select some area on background of desktop it has left some lines after itself. It is particularly unpleasant if you have plain colour desktop background. You can view, how does it look here.
    The next problem with animation in different parts of interface, e.g. sometimes when I open Time Machine some parts of windows are freezing or appear some artifacts or glitches near borders of window. And I have the same situation, when I open Mission Control, or any Adobe app or other, or simply rename a files. I have found few discussions with problems like mine, but in the separate places
    5K iMac - bad GPUs?
    Graphic Problems with Retina iMac
    iMac 5K and indesign glitch
    And after that I want to tell you that I have this problems on four (4) iMacs. It was really difficult to arrange four replace. I have lost a lot of time an spent a lot of nerves for discuss and resolve my problems with Apple support. Finally, they told me that they do not know about problems with iMacs, and they could offer give my money back. I glad to get my funds, but now in my country price for iMacs has doubled. And if they refund my money, I can buy half new iMac only.
    I am sorry for my language and style, but I do not know what I should doing with that. And should I hope, that my problem resolve with OS X updates? Or it is hardware problem of the whole iMacs 5K...

    Yes Ralph, absolutely correct, 4 times. Do you have the graphic card the same as me, or m290? Could I ask you check your iMac for few things, please?
    For the first, can you enlarge scale in System preference/Display and install plain dark color desktop background. Are there any footprints after rectangular selection like in my video https://youtu.be/dBglFvjJx1Q?
    And for the second, could you download this image https://upload.wikimedia.org/wikipedia/commons/0/07/Rembrandt_Harmensz._van_Rijn _-_Nachtwacht_-_Google_Art_Project.jpg  and open in plain Preview.app, and zoom it? Are there any glitches?
    Thank forward.

  • Screen Problems with iMac G5 20" (iSight)

    Hello!
    I had the same problem with my iMac G5 20" (iSight) as described by Bob North Apr. 18, 2006 at http://www.macintouch.com/readerreports/imacg5/topic2276.html#apr25:
    """" I repair Apple products, and recently I've seen strange and erratic display problems with the G5 flat-panel (iSight) 17" and 20"...and I am very curious about the origin. The picture will display what I will call "plaid pixles". Upon boot, the dispaly appears normal, but within 5-10 minutes, either at desktop or in ASD, the normal display will "crash" to the "plaid" display. The desktop, or whatever, can still be distinguished in the background, but it is overwashed by the plaid patterns -- which do change slightly, and also cover the full space of the screen. I've seen different scenarios, 3 in 2 weeks, where the symptom is exhibited with no particular failure pattern -- both before and after repair. I've replaced the main logic on one occasion, with no fix...but the 2nd try replaced both display panel and inverter. The display issue was fixed, but the system exhibited lockups only when it reached the destop. Another repair the same issue was seen after replacing the 20" main logic, where the symptom was not present previous. Personal opinion of the late 2005 IMAC flat-panels, in the hardware sense, is the likelihood of component manufacture issues, possibly the main logic boards or the panel displays themselves. Repair of this model, as opposed to the earlier, non-iSight flat-panel 17 and 20" models are extremely difficult -- access to main componenets is blocked by the display panel, which must be removed for each troubleshooting attempt. The internal hardware design is not oriented for repair ease...they are by far the most difficult to work on.
    Any input regarding the display issues? Thanks.""""
    I can't use the mouse or anything else, and after a while the fans start to go on max. This is the second time I encounter this problem within 30 days. What I have noticed is that the day before, the brightness of the screen started to "blink" slightly -- like if the screen tried to adjust itself.
    But I haven't experienced what Bob North describes as the: "Upon boot, the dispaly appears normal, but within 5-10 minutes, either at desktop or in ASD, the normal display will "crash" to the "plaid" display".
    I just restart with the power button and everything is working OK. I made an Extended Hardware test without any problems detected.
    I have been looking for this issue with iMac G5 20" (iSight) and only found it at http://www.macintouch.com/readerreports/imacg5/topic2276.html#apr25 :
    Apr. 18, 2006
    bob north
    I repair Apple products, and recently I've seen strange and erratic display problems with the G5 flat-panel (iSight) 17" and 20"...and I am very curious about the origin. The picture will display what I will call "plaid pixles". Upon boot, the dispaly appears normal, but within 5-10 minutes, either at desktop or in ASD, the normal display will "crash" to the "plaid" display. The desktop, or whatever, can still be distinguished in the background, but it is overwashed by the plaid patterns -- which do change slightly, and also cover the full space of the screen. I've seen different scenarios, 3 in 2 weeks, where the symptom is exhibited with no particular failure pattern -- both before and after repair. I've replaced the main logic on one occasion, with no fix...but the 2nd try replaced both display panel and inverter. The display issue was fixed, but the system exhibited lockups only when it reached the destop. Another repair the same issue was seen after replacing the 20" main logic, where the symptom was not present previous. Personal opinion of the late 2005 IMAC flat-panels, in the hardware sense, is the likelihood of component manufacture issues, possibly the main logic boards or the panel displays themselves. Repair of this model, as opposed to the earlier, non-iSight flat-panel 17 and 20" models are extremely difficult -- access to main componenets is blocked by the display panel, which must be removed for each troubleshooting attempt. The internal hardware design is not oriented for repair ease...they are by far the most difficult to work on.
    Any input regarding the display issues? Thanks.
    Apr. 19, 2006
    Robert Mohns
    bob north describes: "...recently I've seen strange and erratic display problems with the G5 flat-panel (iSight) 17" and 20"...and I am very curious about the origin. The picture will display what I will call "plaid pixles". Upon boot, the dispaly appears normal, but within 5-10 minutes, either at desktop or in ASD, the normal display will "crash" to the "plaid" display. The desktop, or whatever, can still be distinguished in the background, but it is overwashed by the plaid patterns -- which do change slightly, and also cover the full space of the screen."
    Does it look anything like this?
    http://downwardspiral.net/gallery/pbg4-display
    My nearly 3 year old Titanium PowerBook G4 just did this one day, out of the blue. The problem went away after a few minutes, but I had already taken photos. Thanks to those photos, Apple gave the powerbook a new logic board.
    (This PowerBook has had its logic board replaced twice, a new optical drive, and a cracked case edge replaced. AppleCare has more than paid for itself. Despite the occasional problems, I remain very happy with this machine. I'm sure I'd be much less happy if I had not bought AppleCare!)
    Hubert

    Hubert Frank,
    To Apple Discussions!
    What troubleshooting methods have you tried to solve your issue?
    The knowledgeable users will need this info to avoid the "been there, done that" senerios.
    Have you tried the methods mentioned in the following Knowledge Base Article?
    http://docs.info.apple.com/article.html?artnum=301283 Troubleshooting when there's no picture on the display
    Do you have AppleCare? If so, have you contacted them? If so, outcome?

  • I have a problem with Imac mid 2010 graphics card (ATI Radeon 5670 512MB)

    I have a problem with Imac mid 2010 graphics card (ATI Radeon 5670 512MB). When I play video formats like xvid, mkv, avi iMac freezes and emits horrible sound,in service said the problem is not overheating. Not a problem with memory or hard disk because I placed second correct parts.The same problem is with OSX 10.6.8 and 10.8.4 and other players.Apple hardware test found no problem and tech tool pro found no fault.
    After five days of testing in the service they can not  found fault and it was decided to change the graphics card.
    New graphics have been tested for two days but it is not reproduced divx ... but their test software which did not find any fault on the old graphics...
    Do I have the right to complain if repair does not fix the problem because I use non apple softwere and video formats.

    You could look at the System Profile for the info it presents for the card.  But why wouldn't you think it's not up to date if you have the latest install (according to your sig above)?
    What program are you trying to run?  Is there anything in the system log? 
    I think it's the program that's having the problem and not anything with your video software.

  • Display Problem with my Mac Pro and LG Flatron Wide Monitor in Mountain Lion

    After upgrading to Mountain Lion, my Mac Pro has display problems with my LG Flatron display.  The image is displayed with a black bar on the right and on the bottom.  And the left side of the content is not visible.  I tried every resolution available in the Display System Preferences, they are different in terms of how big the black bars are, and what part is not visible, but none of them are correct.  I held down the option key to try to detect displays or switch to resolutions that are not normally available.  When I restart the image is lined up with the display, but if the display ever goes to sleep or gets turned off, the image reverts to being off center, and the only way I can get it back is to restart...  The interesting thing is that this monitor works fine with the same machine if I reboot using BootCamp into Windows 7.  The Monitor also works fine, connecting the same connector to a Mac Mini, although that mac mini is running 10.6 and not Mountain Lion.  I've reset the SMC and restarted countless times, I don't see any other levers to pull or things to try...

    That card is for a PC it may not give you Startup and Option-Boot screens.
    The 7950 "Mac Edition" card has a very distinctive look:
    http://www.sapphiretech.com/presentation/product/product_index.aspx?cid=1&gid=3& sgid=1157&pid=1777&psn=&leg=0&lid=1

  • External Display Problem with x301

    Hi everybody,
    I have a external display Problem with my x301.
    Ether direct attachment or via Lenovo USB Display Port  Device, the external monitor (22" Benq LCD) starts to flickr after a couple of minutes and the external display shuts off.
    Any ideas on this?
    Thanks a lot
    Chris 

    i have the same problem with X200 and the X200 ultrabay Docking station.
    No idea yet ...

  • I had a problem with imac screen going black. apple store diagnosed prob with video card which they replaced. Brought it home, turned it on (have done this 4 times) it starts up, wheel turns, there is a long bar at bottom which fills up, then it turns off

    I had a problem with imac screen going black. apple store diagnosed prob with video card which they replaced. Brought it home, turned it on (have done this 4 times) it starts up, wheel turns, there is a long bar at bottom which fills up, then it turns off

    Apple guarantees their work, take it back.

  • Display problems with Kwin on intel hardware

    Hi all,
    Since the latest update of xorg and intel drivers, I have a display problem with kwin's expose-like feature. Before I file a bug,
    - Is anyone experiencing the same problem? Do you have a workaround?
    - Does anyone know what could be at fault?

    lardon wrote:
    panosk wrote:Indeed... If you want to fill a bug report right now go ahead, otherwise I have to get to my laptop in a few hours to check logs and post a report then. BTW, could you also try Ctrl+F11 and rotate the cube for a while? You should notice some flashes and very bad performance, even with direct rendering.
    I will, and I hope you'll contribute your logs to the bug report! The question is where to submit it: I'm pretty sure the bug is upstream, but is it a kwin bug or an xorg/intel bug?
    Ctrl+F11 works "fine" on my system, even though it crashed kwin the first time I tried it :-)
    Well, that's a very tough question! I was thinking to fill a bug report in Arch's bugtracker, although I also think it is an upstream bug. Problem is, after reading this http://blog.martin-graesslin.com/blog/2 … paces-4-5/ and this http://www.itnewstoday.com/?p=1803, one can realize the absolute *Mes(s)a * that dominates the whole graphics stack....

  • General problems with iMac displays

    Why is it about iMacs that has these pseudo "burn-in" issue with their displays?
    Is this due to cheap component (LG panels)?
    Or is this some scheme by Apple to make people pay?
    Or both?
    I am a proud mac (for that I have insulted enough PC and Linux sinners), but during the day I am forced to be a PC at work. But I have NEVER EVER seen any image persistence on any make/model of 3rd party LCD monitors before. My iMac is currently connected to a Samsung LCD monitor, and when my "dangle" a window (say Safari) between 2 monitors and leave both screens ON for 5 hours, my iMac monitor gets the "burn-in", but the Samsung doesn't.
    Maybe 5 hours is a bit extreme, but I am starting to see faint "gridlines" showing up on my screen after I had my Excel open for more than 40 minutes.
    What gives?

    You are not alone with regards to this issue with the screen.
    http://discussions.apple.com/thread.jspa?threadID=1446926&start=0&tstart=0
    http://discussions.apple.com/message.jspa?messageID=12248055#12248055
    Apple does not seem to want to acknowledge that this is a problem and will probably tell you that the issues are "environmental" and do not see any problem with it.
    I have a similar set up with a Samsung monitor connected and have not issue with the Samsung.

  • MacBook Pro 15" Late 2011 Problems with iMac 27" Late 2009 TDM

    Hi,
    I just got problems with my iMac 27" Late 2009 (Mini-DisplayPort) and my MacBook Pro 15" Late 2011 (Thunderbolt).
    When I try to use my iMac as external monitor for my MacBook, there are massive glitches and graphical bugs on my second screen.
    I bought a MDP-to-MDP wire from Belkin which works perfect on other computers.
    I tried these things:
    - Disconnected MagSafe from MacBook + unplugged all USB devices + switched graphics to discrete.
    - Shut down all computers ... then booted MBP, iMac and triggered CMD+F2
    - SMC, PRAM reset on both devices
    The cable works, because:
    17" MacBook Pro Late 2011 works perfectly on my iMac screen with my Belkin wire!
    I connected my MacBook Pro 15" to a 27" Cinema Display and it works flawless.
    After that I plugged it out and tested it again with my iMac screen -> suddenly it works.
    Retriggering CMD+F2 or replugging breaks it again with massive bugs.
    The MacBook Pro 17" is on 10.7.2, 15" is on 10.7.3, but I also tried to trigger dual screen in 10.7.0 setup with the same issue.
    Maybe its a problem with the internal 6750M of my MacBook Pro 15"?
    The 6770M of the 17" is working well.
    Sample Video:
    http://www.youtube.com/watch?v=W_pgc52syes
    All updates/firmware updates of iMac and MacBook Pro are installed.
    Any solutions?
    Greets,
    Kai

    Since this is a user to user forum with no employees participation, your plea is a good a screaming into the wilderness.  I suggest that you post your thoughts here:
    https://www.apple.com/feedback/

  • Fonts display problem with Entourage

    Hello,
    I am a new Mac user, having just migrated from Vista to iMac. I love my mac but I am experiencing a problem with how Entourage is displaying some of my emails.
    They display as weird caracters and symbols, but not all of my email does this, just some. The individual characters display with "V' over some of them, and the sizes are all over the map and it is hard to read. However, if I copy and paste into another program, it displays normally. I'm stumped! I hope a more experience Mac user can help me with this.
    Cheers!
    ~Pauline

    They display as weird caracters and symbols, but not all of my email does this, just some.
    It's probably caused by a bad font. If you have Times Phonetic, get rid of it. Send me a screenshot if you want (tom at bluesky dot org).

  • Bootcamp display problems - aluminium iMac

    Hi
    I have an aluminium iMac and I have recently installed windows on it. Everything went fine but there seems to be a problem with the display driver?
    What happens is that when I'm doing something, the computer seems to freeze (music lags) then the display goes black and the computer runs as normal (the music starts playing normally again.)
    I thought it was only when I was playing Counter Strike Source but it happens when I'm not too. Is anyone else experiencing this? Any fixes/ suggestions?
    I've tried repairing bootcamp drivers but to no avail.
    Thanks

    I was having Display Problems on my Intel 20" iMac- weird artifacts, lines, distortion of parts of the screen, weird color patterns, etc... all seemed to happen mostly during viewing video on the computer.
    I worried that it was the card itself, and after about 4-5 years of use, was simply going bad-- and some articles and posts I found online seemed to confirm that this was possible--
    I kept reading and eventually found posts about using smcFanControl to raise the fan rpm manually to try to keep things cooler in there... It seemed to work somewhat but not really, and the artifacts would continue and the computer itself was hot. The temp was usually constantly around 145F with lots of artifacts and distortion. When it wasn't running video or being used a lot, it would cool down and the artifacts would wane.
    I found a step by step guide on ifixit.com to opening the iMac body to replace various components, etc. so I got the bright idea of opening it and blowing it out with compressed air.
    It wasn't that hard to open and the guide was easy to follow, I went as far as removing the screen, which exposed one side of the guts and the fans. I blew it all out, it was dusty in there, and a lot of dust came out.
    I put it all back and am running a netflix movie- temp is staying at about 125 +- and there are no artifacts...!!
    I think I might have actually fixed it-- If you have a mac that is running hot and has weird screen artifacts, behavior, etc... I suggest dusting it and blowing out vents, fans, etc to allow it to run cooler....
    Oh, My computer is way out of warranty, and I don't have AppleCare, and everything is backed up, etc... open at your own risk, knowing you will probably void any warranty.

  • Problem with iMac quality

    I  own a 27" iMac that is just less than 4 years old, and where after sending it for repair with Apple in Denmark was told that it needed a new graphics card for DKK 2899 - approx. USD 490.00.
    I found out that the iMac is produced at a factory in Shanghai called W8 where Apple have had problems with exact same issue in the past, and it seems had agreed to extended warranty replacement to fix these problems.
    Nevertheless I do  believe that Apple customers buy Apple products because we expect superior quality and no Apple customer would expect to have problems with a major component especially on such an expensive products and certainly not within 4 years.
    And if there were a seldom problem with a unit that Apple would rather step up to the plate and stand behind their products quality.
    In my case it seems Apple - or at least Apple in Denmark - is unwilling to do so even though they acknowledge that it very seldom happen

    Do you have a support system in Denmark to protect customers from problems with products and services.  If so advance your complaint there.  Irrespective of the warranty, here in the UK you can get official help against any supplier of goods that are faulty up to six years from purchase.  But you must be reasonable in your approach.  Apple's warranty promise specifically allows for this  when it says ... 
    Coverage is estimated. Learn about Apple’s coverage information for your product. Your warranty is the same whether or not you register. 
Important: Apple’s 1-year limited warranty and AppleCare Protection Plan benefits are in addition to rights provided by consumer law (see details). If you believe you have a valid consumer law claim, please contact us.

  • External display problems with snow leopard

    I just upgraded from Leopard to Snow Leopard on my Macbook and it's created lots of problems with my LCD external display:
    - The display won't work at its native resolution (1680x1050) - it will flash up an image for 1/10 of second and then go black. I can only get it to work at a lower resolution, which looks AWFUL.
    - If I try to start up my Macbook with the lid closed and the display connected, the display won't work at all (it jams on the start up screen). It only works if I keep both of them running
    I never had these problems when using Leopard. I've searched lots of forums and found that many people are having similar problems with external displays. Apple still haven't fixed the bug after repeated efforts from people to get if fixed.
    Here are some threads (now closed) on this if you're looking for solutions:
    http://discussions.apple.com/thread.jspa?threadID=2132912&tstart=0
    http://discussions.apple.com/thread.jspa?threadID=2136455&tstart=1
    http://discussions.apple.com/thread.jspa?threadID=2132837&tstart=0
    http://discussions.apple.com/thread.jspa?messageID=10084332
    Common suggested fixes are:
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    - Clear the PRAM on start-up (does not work for me)
    - Delete /Library/Preferences/com.apple.windowserver.plist (does not work)
    - Change energy management setting to high performance (only works on graphics cards in Macbook 15" and 17").
    From reading these forums it appears that this is a well-know bug. Has anyone else got any suggestions to fix this? And why hasn't Apple fixed this yet after so many people bringing it to their attention? It's clearly a bug that wasn't in Leopard.

    I'M FED UP WITH APPLE! They've always been a little shady, but the last half of 2010 took the cake!
    First it was the iPhone 3g "upgrade" to IOS4 which was garbage and killed my ability to use the 3g until I figured out how to crack the software, wipe the thing clear then reinstall the original software. Next up was purchasing the iphone 4 as a Christmas gift for someone running tiger on their mac, only to find out that the iphone 4 doesn't work on tiger when they tried to sync their contacts - and then having to rush out and purchase snow leopard so that they could enjoy my gift. Then I install Snow Leopard (note - I purchased the family pack) onto my own leopard-running(10.5.+) powerbook only to have the external LCD display I've been using for years suddenly stop working.
    Oh, okay, to be fair, it works IF I RESIGN MYSELF TO SET it to "mirror image" (which defeats the purpose of having multiple displays) and drop the resolution down to a pathetic, unsharp, nearly distored setting that is almost painful to look at knowing that this monitor was just A COUPLE OF DAYS AGO showing me crystal clear images.
    Then I exhaust myself trying to find a fix only to discover that APPLE in their infinite brilliance (AKA - their torture of loyal customers) knows of the issue - worked it out - then created an update that created the issue all over again. I'm so done! No more macs. I'm going back to the evil land of PCs. At least there, you know you're getting crap, it doesn't sneak up on you after getting you to trust it time and time again.

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