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iMach 27 dark patches, lines, bands & yellowing -my Apple Honeymoon is over

I purchased a top-of-the-line Apple iMac 27” (2.66 GHz Intel Core i5, 4GB RAM) in June 2010 for my new software development startup. The stunning all-in-one display was a big factor in my choosing a Mac over a Windows PC, for which I had been primarily programming earlier. The Apple reseller I purchased this from strongly recommended that I also purchase the 3 year AppleCare Protection Plan (APP) so I could get peace of mind with this new system, as AppleCare would cover the complete system, including the display, for 3 years as opposed to just one year without it. Additionally, APP would provide at home repair and I needn’t lug the system around in case it needed service. I trusted Apple with my money, and purchased the APP to cover my investment in the iMac, not knowing that all this was hogwash and I would still need to run from pillar-to-post when the time to seek repairs actually came.

Within just six months, I started noticing some dark spots / patches on the screen. At first I thought that these were on top of the glass but when I looked closely and made sure the glass screen was clean, I was shocked to find that the patches were within the display itself. I was still not very worried and trusted that Apple would take care of the problem as I had the AppleCare Protection for 3 years and it was still well within the first year that I had this problem.

I contacted Apple support and logged a support case with them on 25th November 2010. Apple referred this case to their authorized support center (UC Infosystems) and the technician who saw the system acknowledged the problem and mentioned that the screen needed a replacement, and Apple would cover it as it was under warranty. The service center ordered a screen and came over to replace it. The first screen they got was clearly defective as it had prominent dark bands running from left to right through the entire width of the monitor. Needless to say, the technician took the screen back right away and asked me to wait for another replacement while they got it from Apple. The replacement screen came and it was changed on 3rd December 2010. Upon replacement, I noticed that while the screen did not have any patches, it did have a dark band in the bottom edge as well as yellow tinge across the right and bottom edges as well as in the center. When I mentioned it to the service technician, he brushed it aside saying that it wasn’t a problem and it was probably my imagination. He suggested that I work with the system for a few days and contact them in case I still have a problem. I reluctantly agreed as the main issue of the patches had been resolved, and I didn’t want to create a fuss about this somewhat subjective issue.

To my shock, within 2-3 weeks of having the replacement screen, I started noticing dark spots and lines developing once again. This time, the problem was even more severe than what I had with my original screen. Photos of the display showing this problem are here:
* http://img257.imageshack.us/img257/7359/img3211x.jpg
* http://img522.imageshack.us/img522/3755/img3213j.jpg
* http://img152.imageshack.us/img152/4049/img3209r.jpg

The photos have been taken in a dark room to avoid any reflections, and to give a true picture of the problem. The display is clean on the outside and the dark patches and lines are very visible in the top right corner extending to almost the middle of the display. There is a prominent dark band near the bottom edge going across the screen. Additionally, you will notice that there is yellow banding on the right and bottom edges of the screen and a yellowish patch in the middle.

I contacted Apple support once again (on 28th December 2010), and was assigned another support case (Case Ref # 195112734). The Apple service and support center technician came by and took photos of the screen with his mobile phone to send to Apple before they could order a replacement. He also acknowledged that the display was indeed defective and needed a replacement. Additionally, he mentioned that while this problem was widespread, Apple recently started denying some screen replacements without much explanation. I still had my trust in Apple as they had built a reputation for good products and service.

The same evening, I was shocked to receive an email from the service center that ‘Apple had declined to cover this issue under warranty’ without any other explanation or reason and that I should contact AppleCare if I had an issue with that. I was completely shocked that they could do this as the problem was clearly in their display, the system was less than seven months old, and I had also purchased AppleCare Protection Plan for ‘peace of mind’ which clearly I didn’t get given this episode. I called AppleCare and narrated this to the support representative. His noted mentioned that the issue had been resolved (without any clarification on how it was resolved)! He then consulted with his supervisor who spoke with me and mentioned that technical people had seen the photos of the iMac display and determined that there is no defect/problem with it, and hence Apple could not cover the issue. I mentioned to him that the service technician had taken his photos in poor light with a mobile phone camera and I had better photos that clearly show the issue. The supervisor asked me to email him the photos and said that he would immediately take up the matter with the technical engineers. However, he mentioned, that there were no promises that Apple would cover the issue, despite the issue occurring on a screen Apple itself had put in just 3 weeks ago and my having purchased AppleCare Protection Plan. I emailed him the photos right away and requested either repairing or replacing the display. This happened yesterday and I am awaiting a call or email back in response.

I should also mention that I take good care of my computers, don’t smoke (if smoke damage is what Apple is thinking of blaming this on), and that the system is kept in a nice, clean, low-traffic home-office environment, where I have 5 other computers/laptops/UMPCs which have no such issues. I have purchased several Apple systems (including a MacBook Pro laptop, two Mac Minis, iPhones – both 1st Generation and 3G as well as a couple of vintage Macs) and not needed to report issues to AppleCare in the past. Now, when I truly needed the AppleCare support, I am being denied it. I am a reasonable person with low demands, but the way Apple is treating me with this case is pathetic.

I sincerely believe that I have a genuine support case and I am not getting the product and service that I paid top dollar for. The display I got was clearly defective as the pictures show for themselves (and the problem is with a new display that Apple just provided three weeks ago!) No amount of environmental factors in my home office can cause the issues I am having. Apple needs to own up to the problem and be the company with high morals that Steve Jobs is presenting it as.

I will keep you updated on how this case proceeds, but a few disappointing things I am learning of now are:

• Apple iMac 27” screen isn’t really that gorgeous and cannot even last through it’s warranty period without developing dark spots, lines, bands and yellow tinges.

• Apple is trying to refuse acknowledging that their iMac’s displays have a design or manufacturing defect that is causing these issues (dark spots/patches, lines and bands, yellow tinge). This is despite the fact that several people have reported these issues and posted pictures online showing the problem.

• AppleCare Protection Plan is hogwash. Apple can refuse coverage under the plan, and the customer is at their mercy. This plan certainly didn’t give me the peace of mind that I thought I bought when I paid for it. This is even within the first year of purchase!

• While Apple products are gorgeous to look at, they are not built to last. If your Apple computer develops a problem, you’re out of luck. Your honeymoon is over. Given the number of issues people are reporting with the iMac 27, especially with the display, this is more likely to happen than not.

Given my experience, this iMac will be my last Apple purchase, and I wouldn’t recommend Apple products to anyone, nor develop software for the Mac, unless the issue is satisfactorily taken care of by Apple.

Warm regards,
Rohit Singh

iMac 27 Core i5, Mac OS X (10.6.5)

Posted on Dec 28, 2010 8:53 PM

Reply
25 replies

Dec 28, 2010 10:20 PM in response to rxs

I have the same problem on my iMac 27" Core i5.

As an engineer, I'm thinking that a possible reason is that there is uneven temperature distribution over the LCD.

There are so many components behind the LCD, but they have different heat generation rate (e.g., the GPU, which is on the top-right corner, is usually the hottest spot). This will lead to some hot spots and (relatively) cool spots on the back of the LCD. Everything will expand when heated and contract when cooled, including different areas on the LCD. When some hotter areas on the LCD expand, while other areas do not, there will be stress. This will lead to dark spots and bands, just like pressure damage on the LCD (if something keeps pressing an area on an LCD all the time, there will eventually be a dark spot).

However, obtaining uniform temperature distribution is a really hard engineering problem, not considering different users will have different habits using the computer (i.e., different temperature profiles). It's not easy to solve this perfectly.

A fan control software may fix the problem if it can give a more uniform temperature distribution over the LCD by controlling the fan speed (and thus the temperatures) in a more robust way. However, without a fan control software (or other additional cooling approaches), the computer will be very hot, and there will be burn-in issues on the LCD.

Dec 28, 2010 11:20 PM in response to xueyi

Apple needs to own up to the problem and fix it. It's either faulty manufacturing or design that is causing this issue. If Apple claims their design is correct, they need to get manufacturing in order and repair/replace the defective screens instead of shying away from the problem and denying repair/replacement on a 7 month old machine even when the machine has a 3 year Applecare Protection Plan

Dec 29, 2010 7:45 PM in response to rxs

Apple Customer Service called me yesterday and said that the issue is 'environmental'. Of course, they had no explanation of what they meant by environmental. I don't smoke. This iMac is in a clean, well ventilated, low traffic home-office room which only I use. There can't be a better environment to keep this in... and none of the other 5-6 computers (PCs, MacBook Pro, Sony UMPC, Dell Laptops and Sun Workstation) I have in that room are affected.

They are agreeing to do one more replacement - the 'last replacement, as the issue must be environmental as it only occurs on my system out of so many that Apple sells'

How can I avoid having this issue from recurring??? I am afraid the problem will recur and Apple is putting me in a tight corner.

Jan 1, 2011 9:30 PM in response to rxs

I have exactly the same problem! And you know what the apple technicians said it was? They said that it was from liquid spilling inside the machine! They said that since it was some type of liquid damage, it wouldn't be covered under the warranty. What a bunch of hogwash, I never had any liquid any where near this computer and anyway, how in the world could it get inside so easily? And I have only had the computer for 7 months. And I am like you, take very good care of the machines that I pay top dollar for! So far the store that I bought it won't do anything and I am very angry that I paid so much money for something that I thought would be a great tool for me to use for my photography. This is my first apple computer and it will be my last unless they make it right.

Jan 2, 2011 2:00 PM in response to rxs

Mine has a VERY faint region in the top left corner.
From what i've read the causes are:
1. Leaving your iMac in "somewhat" direct sunlight. Having the sun hit only part of the screen every day, through shades and such...

2. Using your iMac's CPU and/or GPU a lot (games, rendering)! This causes NORMAL temperatures inside the case to heat up the LCD unequally.

BOTH cases involve the lcd being affected by heat in certain regions, over and over again. The heat isn't very high, but it's the unequal dilatation in the lcd panel itself that causes parts of the screen to degrade.
Apple's "thin" design aggravates this issue with the lcd panel. I think it's the lcd manufacturer that's to blame.

My personal opinion is that ALL iMac's will be affected in due time. The problem relies with the lcd panel itself, which seems VERY sensitive.

Jan 2, 2011 2:45 PM in response to rxs

Also... this may well be the longest post i've ever read. Try to relax... it's only a dam* machine, they are far from perfect.

It's true that you might feel cheated... the ads, the apple store experience, the design... it all gives you that warm fuzzy feeling that makes you spend a ton of money on a product.

But it's all still made by the same people that make pcs in china. The integration is much better though.

So Apple in fact cheated you because you assumed that their products are as perfect as the ads. But you made that assumption, Apple was just there showing you pretty pictures and music. It's all you in the end.

Also the post sounds like you might be pretty ******... try not to end it with "warm regards"... 😀

Jan 2, 2011 9:27 PM in response to mogwailove

Well this has been a problem for sometime now. I have two 24" Mac's from 2007 and 2008 and both have the same issue. We took one in for repair about a year ago and they first said it looked like someone smoked in the house and they would just clean it and call us when it was fixed. They opened the glass and found out no one smoked in our house. They then said it was moisture that somehow got in there. The next day they called and said they were going to replace the computer. The only time we see it is when there is a white screen so we have just lived with it. I cant believe this issue is still around after 3 years.

Jan 5, 2011 8:21 AM in response to rxs

I am extremely upset by this thread. I'd planned on purchasing a 27" iMac to replace my 24" iMac, which is no longer covered by AppleCare because it is more than 3 years old.

I have always relied on AppleCare to fix costly problems -- Apple has replaced a total of 5 logic boards, 2 hard disks, and an optical drive under warranty on my various Macs over the years.

Now you're saying this problem with 27" iMacs and possibly other iMac models is relatively COMMON and NOT covered under AppleCare.

Maybe someone at Apple can explain why I should still consider buying that 27" iMac? At this point, I'd rather stick with something I know works -- at least for now.

Jan 5, 2011 9:19 AM in response to rxs

... so finally, today, two technicians from Apple came by and replaced my faulty display (which Apple is saying is the last display replacement I'll have as it must be something in my 'environment' that's causing it). I am a bit relieved, as so far, the new display looks fine, and I'm keeping my fingers crossed. I definitely don't want this problem to recur... but the way it's affecting so many people, and how it's affected me repeatedly, I think this is a losing battle.

The technicians did mention that
1) this is a widespread problem
2) It is affecting 70-80% of the iMac 21, 24 and 27" models
3) just this week, they've done 7-8 screen replacements alone for this kind of issue in my region
4) a lot of people are being denied coverage by Apple, which is blaming environmental issues for this kind of problem. People are facing difficulty in getting screen replacements/repairs for this reason, and
5) the display is likely due to a problem in the design or a manufacturing defect in the displays.

Jan 28, 2011 11:53 PM in response to rxs

Hi Rohit.. any luck? I have the same problem and I bought my iMac just a month ago!!! I am yet to contact Apple support, after reading this thread I am extremely disappointed. I recently moved back to India from the US and I am really worried about the support system here. I hope I can get a permanent solution to this problem.
Thanks,
Aiyesha

iMach 27 dark patches, lines, bands & yellowing -my Apple Honeymoon is over

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