New 24" iMac Screen Brightness Problem

My new 24" iMac's screen is much brighter on the left side than on the right. What should I do? Surely this is not normal for an iMac. Did I get a defective screen? Please help! Thanks in advance!

I got a 24" iMac from Amazon and noticed the screen gradient after a few hours of use. Then I also noticed a stuck pixel in the middle of the screen. I was very bummed and after reading through forums I realized that this seems to be a common problem. I was getting prepared for 3 "geniuses" gathering around my iMac telling me that they can't see anything wrong with it and then me trying to sell it on ebay with a $500 loss.
But things turned out quite different for me.
I took the iMac to one of our 5! Apple Stores here in Houston and explained the gradient and the stuck pixel to the Genius. He turned the computer on, looked at it for about five seconds and says "yep", turns it off and starts typing away on his MacBook. Five minutes later I asked him what he was doing and he goes: "Oh, I'm replacing it." Me: "the screen?" Him:" No, the whole thing!"
I was overjoyed, I almost couldn't believe it.
They brought out a brand new box and I asked him if they would let me transfer my files. They agreed and handed me a FW cable. I checked the new iMac for any screen issues and it looked perfect. So I started the setup and let it do its thing. I decided to go get something eat with my daughter while the iMacs were transferring files. Got back an hour later and it was done. The new iMac started up in my user account and everything. But then I noticed a black dot that almost looked like a dead pixel but it appeared to be right behind the glass and not on the screen itself. I asked another genius (the first one had left) if he could remove the glass and try to clean it. Sure enough he went to get the suction cups and popped off the glass. The black dust speck was visible and easily removed. The glass got re-installed and I packed the new iMac back into the box.
I expressed my feeling of satisfaction and headed home.
At home I thoroughly inspected the screen again and it appears to be nearly perfect.
I'm very happy now. Apple sells their products for a premium and I my case I received premium customer service. Way to go!

Similar Messages

Nokia Lumia 1520 - Screen Brightness Problem

I have two Nokia Lumia 1520.
Both of them have the same problem. I will explain the problem to you in detail and before that let me assure you I am a Windows Phone long time user , have been part of the development , developed several apps for the platform and I have used Lumia 800 , 720 , 920 , 925 and now 1520. So I am well aware of all the settings , sunlight readability , automatic brightness etc. This problem is not due to any of these , I can assure you
Now the problem ,
I set the automatic brightness option OFF
I move the brightness to HIGH
Then I lock the phone
When I unlock the phone , the brightness drops by 10% suddenly without any intervention
This problem happens sometime. Some days I see this problem , some days I don't and there are few days where I see this problem very heavily.
I purchased another 1520 and it has the same problem. I am very sure , from my experience that this is a firm ware issue. This is NOT a hardware problem , but a serious problem from your software end. It is prudent that Nokia recognizes this problem and finds a solution to this. Interestingly , I am not the only one who is facing this problem , the whole globe is facing the same problem and for such a pricey phone , this is a frustrating experience - very frustrating. I am sending some links , which will show the problems users are facing:
http://forums.wpcentral.com/nokia-lumia-1520/255608-lumia-1520-screen-brightness-dimming-unwantedly-...
http://forums.wpcentral.com/nokia-lumia-1520/251303-screen-dimming.html
http://forums.wpcentral.com/nokia-lumia-1520/252501-screen-brightness-fluctuates-purpose-bug.html
http://forums.wpcentral.com/nokia-lumia-1520/255508-lumia-1520-screen-brightness-problem.html
The phone is rock solid and amazing except this irritating problem.
I have only few days within which I can request a exchange from the merchant. So if any Nokia official can confirm that a software fix is on the way , it would be super helpful
Nokia , please help !
Moderator's note: We have removed the IMEI numbers. Posting of personal information is not allowed in this forum for security purposes.

I have Nokia Lumia 1520 Black.
I have also been facing the same problem with screen brightness.
The problem occurs only when the Brightness is in Automatic mode.
--> When the Brightness is set to Automatic mode & take out from dark location to bright location the display turns out to weird grey color.
--> And then if the brightness is set to low, medium or high display comes to normal.
Is this issue related to the hardware or software.
If it is related to the Software will you be able to fix it ? or else How about the replacing with the new one ?
Awaiting for the response.
nonnin8 wrote:
Same here i have white 1520
I have another problem with the screen, when it wakes up or i get a call the colours are off grey colour are very light grey and after few moments it turns to normal.
I am using WP 8.1

24" iMac Screen Brightness Bug and others

Hi,
There seems to be some serious issues with the 24" iMac. About 6 days ago I bought a 24" iMac (2.66 Mhz model w/4 GB RAM + 640HD).
Out of the box it had Leopard 10.5.5 installed; there were several problems.
1. Screen brightness was way too BRIGHT. Display preferences would not pull brightness down. At least not down far enough so that the screen could be viewed without extreme discomfort. Plus add insult to injury a reboot would reset the preferences to maximum brightness. NOTE: An upgrade to 10.6.1 did NOT fix the issue.
2. Viewing a browser page via either Safari or Firefox (latest versions of each) was not good. A vertical scrolling would be jumpy and appear pixelated. Upgrade to 10.6.1 seemed to fix most of the issue in Safari, but Firefox was still not working properly. The issue appeared like a horizontal "ripple" in about the bottom 2/3 of the browser window. The effect did NOT extend outside of browser window. Changing screen resolutions did not work.
3. Connecting a USB Logitech head set caused issues with Sound preferences.
If the head set was connected during startup the machine would recognize them as main sound. The internals speakers did NOT appear in the Sound preferences. as an optional choice. Removing USB headset and reboot would return the internal speakers to the Sound preferences. Plugging in headseat would work for a while. We could repeat and same problem would occur.
These are all in 10.6.1 - definate bugs.
Returned with the iMac to the Apple store. Bottom line, after nearly three hours; the Apple technician, and everyone could see what we were talking about.
Regarding the screen brightness. Nothing they could do about it. They stated that "not too many people have complained about it, to their knowledge." They stated that the electronics in the "florescent" panel could not be turned down the same way. TRANSLATION: The programers at Apple let this one slip past them. As a customer (software programmer & network analyst) I expected a bit more of an intelligent answer.
However.
Examining the 20" model I noticed that we could turn down the screen brightness - at least to a level that my wife and I could live with. PLUS the settings remained after a restart. Something that was NOT happening with the 24" model.
So - we exchanged the 24" for a 20". Frankly we are a LOT happier. The Safari/Firefox issue is still carried over to the 20". However it is not nearly so noticable on the smaller screen.
Plus the USB headset did not cause the same Sound Preference issues.
So - Thanks for the speedy return/exchange of the iMac. But someone needs to look at this from the programming side of things.

HI, in response to 1_pixelperson, we've returned TWO iMacs with 24 inch screens, both so bright our eyes bugged out ... the current 20 inch is our third computer in 8 days ... he reported specifics
We did find a SCREEN DIMMER app <www.adpartnership.net/DarkAdapted/> ... no solution via Apple ... iPhoto migration funky, dates out of sync, not valid, but thankfully Time Machine really works ... Firefox remains wobbly, not smooth ...
Also, be careful when loading pics from phone with Bluetooth, it sucked my entire address book into my phone.
People at Apple store were nice, today's 20 minute scheduled Genius meeting morphed into two hours+ ... including return ... would have preferred 20 inch with larger HD, came with 320 ... they couldn't do, upgraded ram while there.

New 27" iMac Screen Has Grey Marks

Called Apple support. They just told me to take into an Apple store. I've had my new iMac for maybe two weeks now and I just started to notice the lower half of my iMac screen has a sort of grey / purple residue throughout. Not sure if it's on the outside or the inside but it appears to be on the out. I've tried wiping the screen several times with the black cloth that came with my computer but nothing gets rid of it. I've also tried a very damp cloth.
Any ideas?

I have a late 2009 21.5 iMac.
Last night my friend brought his mid 21.5 2010 iMac here so I could upgrade him to Yosemite ( I have very fast internet).
Anyway, side by side, the 2010 iMac is EXTREMELY bright compared to my late 2009 iMac.
Here is a photo that I took of them to give an idea. I posted a question about it elsewhere here but no responses yet.
You can see the color profiles for each. The 2010 is on the left, 2009 on the right. I wonder if there's a way to adjust the color profile to match the 2010?
If you look ...you can see mine has a grey tinge ....(it looks yellow on my monitor but on the camera and to my eyes, mine is definitely a grey tinge. The 2010 is bright white no matter where you look at it.
Below is a link to my original post in detail for anyone who might have a solution:
https://discussions.apple.com/thread/6629552

Restore imac screen brightness from Time Machine?

Hi
I am a professional photographer and I am constantly struggling with calibrating my image color and brightness. Just recently I got my proofs back from the printer and they were all too dark, no highlights and drab. This tells me that my screen is too bright and I am therefore adjusting my editing down too much which is resulting in darker/less bright photos...
Just for testing I went into a few photos and blindly edited up the brightness on them, even though they looked too bright on my screen. I got them back and they were much better. Problem is, dummy me, a day later tried to calibrate my monitor and moved the screen brightness. This makes the test prints I did not reliable now because the screen brightness is no longer constant.
Question- is there any way using time machine that I can go back to the day before I calibrated my screen to restore the original screen brightness? I don't want to change or restore anything else.
Thanks in advance,
Shannon

ParadoxInSoCal wrote:
My Mac lost power while I was in Mail. When I rebooted, my mail had lost all my Inboxes and accounts. I tried to restore from Time Machine, but I can't get all my accounts back. I have found all my stored emails in a Time Machine folder. Is there any way to go back to a previous version of Mail where it was all organized and intact? What I'm seeking specifically is for the numerous email accounts I had set up show up again under my Inbox.
Do the mailboxes appear in Mail, but are empty or incomplete? If so, I'd be inclined to start by selecting each mailbox in turn, then from the menubar, +Mailboxes > Rebuild.+ That may fix it without any further hassles.
If the mailboxes appear, but the rebuild doesn't recover all the messages, see #15 in the Frequently Asked Questions *User Tip,* also at the top of this forum.
If the mailboxes don't appear at all, quit Mail and use Time Machine to restore the preferences file, then the messages, as in #15.
It's in <your home folder>/library/preferences/com.apple.mail.plist
If you were searching for it via a Finder search, you have to include +system files,+ as odd as that seems. But the easiest way to find it is to just navigate to it in your backups.

Iphone 6 screen brightness problem

hello everybody, i have iphone 6 which i am using now for 2 and half months. just from 1 week ago my iPhone 6 screen suddenly goes dim when I'm using it in strong sunny light. i always set my auto brightness on and when i use my phone in sunny light at roof first it gives clear and bright display then suddenly screen goes dim and when i try to maximise brightness level nothing happens it still remains dim and i notice my screen becomes very warm .. then i turn off my phone for few minutes and turn it on the screen brightness again works fine...and auto brightness also works normal..i have noticed this problem 2,3 times whenever i use it in sunny light at the roof..plz give me any suggestion....
iphone 6, 64 gb model iOS version 8.1.2

It's a google maps app setting. I agree, it is highly annoying and I have no idea why they put that setting into the app without the option to change it. I did a 600 mile trip with google maps and the auto screen dimming feature was awful.

IMac screen sharing problem

I have an iMac and a MacBook Pro both running Mavericks. I can screen share my MacBook's screen and see it on my iMac with no issues. But I get an error message when I try to screen share my iMac screen and see it on my MacBook's screen. I've tried turning off both firewalls. Setting are the same on both computers. Also, file sharing works perfectly on both computers.
This has been frustrating as I only really want to see my iMac screen from my MacBook Pro.

Hi,
As a Starting point go to iChat Menu > Preferences > Video Section and change the Bandwidth Drop down to 500kbps
Do this at both ends.
10:36 PM Friday; October 28, 2011
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb( 10.6.8)
 Mac OS X (10.6.8),
"Limit the Logs to the Bits above Binary Images."  No, Seriously

Screen brightness problem iphone 5 ios 6.1.4

The screen will quasi-randomly go to low brightness and be barely readable - auto-dim or not. I can't usually tell what triggered it - it's just not obvious.
However, I found a repeatable pattern (finally) when using it in a car. If I plug in the usb in a car (say a ford), and use both google maps and play tunes or podcasts simultaneously, the brightness is guaranteed to dim after approximately 20 minutes, on its own, without intervention. The auto-brightness switch has no apparent effect on this.
This is, of course, the most annoying defect, because you're using google maps to watch where the f*@k you're going, and then the lights go out and you're fumbling around with brightness while driving.
Anybody else observe this problem?

It's a google maps app setting. I agree, it is highly annoying and I have no idea why they put that setting into the app without the option to change it. I did a 600 mile trip with google maps and the auto screen dimming feature was awful.

IMac screen chessboard problem

Hi, I've got the old imac white from around 2008 and until now it was brilliant. But...yesterday a problem occured, after the initial aoole logo and the bluescreen this appears:
When I start the computer with the shift button the screen is ok. When in safe mode only the mouse pointer is affected- it has horizontal gray lines around it.
Any ideas?

Hello PalmerMac,
Yours is one of many such reports. Sadly because you are now out of both warranty and Apple Care (should you have had it), the cost of clearing it up will fall upon you.
Whatever else you may hear, unless you are truly competent, do not buy a glass screen and try to fit it yourself. Have the job done properly by an Apple retail store, or a premium re-seller.
Here is a link to a typical report ... Greyish Smudge marks behind the glass...: Apple Support Communities ...
Just look at the number of posts ... 940 and counting.

IMac screen backlight problem

Hi
I have a 6 month old (late 2011) iMac 27" 2.7-i5-4MB/1TB, the screen constantly blanks with the iMac still running and the screen still with content on (can just see if I shine a torch at it).
Hot corners off - sleep set to 30 mins
I can bring the screen back if I press shift-control-eject and move/click the mouse, sometimes this lasts for 5 sec sometimes for 10 min or more.
Why is the backlight doing this, its seems there is a hardware problem that is restored (temporarily I admit) by a software action, I cant believe changing the backlight will fix this.
Does anyone have a solution or is it a case of getting it back to the mac tech's???
Thanks
Victor

Your iMac should still be under AppleCare warranty.
Sounds like intermittent backlight connection.
Bring it back to an Apple store or authorized Apple repair facility to be diagnosed and repaired.

Photoshop CS5 and Windows 8.1 Screen brightness problem????

I just recently updated to Windows 8.1, and now every time I open up Photoshop, my screen automatically lightens, lightening up my work/picture as well. It's annoying as hell. I want the picture to look normal, the way it is supposed to look. When I view the picture through my picture gallery, the picture looks normal and is in normal lighting. But every time, I open it up in Photoshop, my whole screen lightens, including the photo. Like I said, this is extremely annoying and now I can't edit my pictures properly because I can't see it's true colors. Instead, I see a brightened version of it. Is anyone else experiencing this. If so, please help me fix it. Will I have to uninstall Windows 8.1? I researched this and read in several different forums that this isn't an option. And that SUCKS! Please help, if you know how to fix this. Thanks!

I have been using Photoshop on windows for more then 20 years on windows. Windows 95, Windows 2000, Windows XP and Windows 7. I never installed Windows ME, Windows Vista or Windows 8. I have never seen any version of Photoshop change a displays brightness or even the image color when scaling or going from float to tab to single image with PS UI to full screen. However I hardly ever use Photoshop in full screen mode.
At different zoom views image may seem like the color change because of the scale of the image or the portion of the image that is on screen or the color of the border around the image.

New 24: iMac 8800 FCE PROBLEM

I just got a brand new 24 inch iMac with the geforce 8800 graphics card. I installed Final Cut Express and it won't open! I get a configuration error that says "This software requires a certain hardware or software which is missing. *AGP graphics card." What is going on?? Can this be fixed?

Press <Esc> and the application should open. What version of FCE is this? You should be running version 3.5 or 4 with your Intel processor.
Message was edited by: R. Mitchell Fore

HP 6735s with Radeon HD 3200 and Windows 7 RC - screen brightness problem (+)

Hello.
I installed a win 7 rc 64x on my HP 6735s and surprised when find brightness control did not work correctly. When i try move brightness slide bar in power plans or in win+x app it slide back to minimum right now. However, sometimes it changes to 70% and brightness change too, but only in this session - logoff, reboot or hibernate - and brightness again goes to minimum.
fn+f keys dont work at all, only in bios stage.
I tried all drivers i can find - ati whql for win7, ati beta, hp keys for vista 64 - its all dont work. What can i do else? HP engineers know about this problem? In ms forums only one solution - hp will release correct drivers before win 7 starts.

Just go to www.hp.com -> Support & Drivers -> Step1: Download drivers and software (and firmware) -> Step 2: 6735s (your laptop model), GO -> Select HP Compaq 6735s Notebook PC -> Microsoft Windows Vista Business (64-bit) -> HP Quick Launch Buttons.
In fact, it's the same version for all Vista Edition, just choose 32-bit or 64-bit.
Regards.

IMac screen dimming problem

Can someone please tell how to fix this? I believe it may be a hardware issue, but when I reload the iMac, it goes away. When I put my HDD image back, the problem starts up again.
Note: this is networked iMac (it is bound to a AD domain). This only happens after the iMac has been sitting idle for enough time to log out.
Here a video of the problem:
http://www.youtube.com/watch?v=gpNCKdP5wo0
Thanks!!

Hello,
The 2012 macs (and later apparently) not waking normally from sleep after hours being in sleep. (noted here ...
http://www.xlr8yourmac.com/archives/feb13/022813.html#2012macswontwake
"Why 2012 iMac/2012 Mac Mini won't Wake After Hours of Sleep (Hibernates/Powers Off)")
The sleepimage file still reappears even if never slept. Delete it (hibernate off, etc) - within minutes its back.
Anote on that here - http://www.xlr8yourmac.com/feedback/Chameleon_SSD_Optimizer.html
About iMac sleep, but...
http://forums.macrumors.com/showthread.php?t=1529750
https://discussions.apple.com/message/22336226#22336226
Daniel Leary 2008
Re: Mac Mini wake up issues
Okay this workd for me, I typed into Terminal:
     sudo pmset autopoweroff 0
     sudo pmset standby 0
then verified that the changes were made with
     sudo pmset -g
and so far so good!

New 27" iMac: AIRPORT & BlueTooth Connection Problems

Hi There,
My 24" Intel Imac (C2D) has been replaced with new 27" iMac.
The problems mentioned below did not exist on the 24", However, I have real wireless
connection problems with the new 27";
1. AIRPORT: 27" iMac will not create Network (Computer to Computer) therefore I am unable to connect my iPhone 3G to its WiFi Network (some iPhone Apps - require WiFi)
2. BLUETOOTH: Although the 27" Imac is paired with my iPhone 3G - it will not connect iPhone to
Bluetooth..... BT options for both iPhone and iMac are ON and set as Discoverable.
(Note: Apple Wireless Keyboard & Apple Magic Mouse are both connected)
It seems as though Apple have changed procedure for actioning the above on these new 27" iMacs,
however they have not documented what is required to make it happen..... OR its a bug in 10.6.2 ??
If anyone has similar problems or knows of a workaround - all comments and advice would be much appreciated.
NB: This 27"iMac has no problems joining with an Airport Network (Airport Extreme Module) which then allows the iPhone 3G to also connect to that (for WiFi) But, that would seem to be an awkward and unnecessary proceedure ??
I'm baffled - there seems to be something missing (in OS Software or Procedure)

Sound like some strange issues.
1. AIRPORT: 27" iMac will not create Network (Computer to Computer) therefore I am unable to connect my iPhone 3G to its WiFi Network (some iPhone Apps - require WiFi)
So you don't have a wireless network that you normally use?
2. BLUETOOTH: Although the 27" Imac is paired with my iPhone 3G - it will not connect iPhone to
Bluetooth..... BT options for both iPhone and iMac are ON and set as Discoverable.
(Note: Apple Wireless Keyboard & Apple Magic Mouse are both connected
Are you saying that the iMac is using Bluetooth to connect to the keyboard and mouse but can't connect via Bluetooth to the iPhone?

New 24" iMac Screen Brightness Problem

Similar Messages

Maybe you are looking for