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iMac 27 - black spots

Another update....
The black spots are starting to come back, AGAIN. They just replaced the panel a few weeks ago and already I can see them. It's something else thats obviously causing this problem. This is beginning to be frustrating. Its not easy to lug this thing back and forth to the mall for them to see it. I hope they replace the whole damn thing. This is what I get for buying this thing when it first came out.
 
  1. Yellow tinge
  2. Gray banding
  3. Blotching and imperfections in the image
  4. Black spots in upper or lower corners of display

BAH!
 
From the posted pictures, those black blotches look like they could be some kind of mold. The fact that they spread, or spontaneously appear after time, is a characteristic of mold. Mold spore contamination could have been on the panels' front plastic sheets before fabrication.
 
Norskman said:
  1. Yellow tinge
  2. Gray banding
  3. Blotching and imperfections in the image
  4. Black spots in upper or lower corners of display
BAH!
Click to expand...

I don't see a 27" iMac in your signature so is it your MBP with these issues?

My own i7 has none of the above.

drambuie said:
From the posted pictures, those black blotches look like they could be some kind of mold.
Click to expand...

That's an excellent theory, especially since it is something that appears to develop and worsen over time.
 
I just got off the phone with Apple care about the reoccurance of the black spots. I was not at home and the tech could not pull up all of my info for some reason so he gave me some generic answers and told me to call back later.

I told him my main gripe was that I didnt want to have to lug this thing to the mall for them to look at it and then tell me they were going to order the part, and bring it back later. Also, I was concerned that something else is causing this to happen because the new panel was just put in around a month ago.

His answer to me was that they have the ability to come out to my house and do the repair there. That's all well and good except I think the chances of it happening AGAIN are high. The real thing I'm after is a replacement. Is there something I can do to steer them in the direction of replacing my computer without sounding like a jerk?
 
iMac27 said:
I just got off the phone with Apple care about the reoccurance of the black spots. I was not at home and the tech could not pull up all of my info for some reason so he gave me some generic answers and told me to call back later.

I told him my main gripe was that I didnt want to have to lug this thing to the mall for them to look at it and then tell me they were going to order the part, and bring it back later. Also, I was concerned that something else is causing this to happen because the new panel was just put in around a month ago.

His answer to me was that they have the ability to come out to my house and do the repair there. That's all well and good except I think the chances of it happening AGAIN are high. The real thing I'm after is a replacement. Is there something I can do to steer them in the direction of replacing my computer without sounding like a jerk?
Click to expand...

I have to wonder what is going on here. Are you in an area of extreme humidity?
 
No I'm not I live in New Jersey, and since November when I bought it, its been pretty calm and cool. Also, I live in a smoke free enviornment.
 
I actually had some MASSIVE burn in problems on my 24". You could actually read text! Even after they replaced the LCD. So they swapped it out for me for this beauty!

I would have them replace the whole thing...
 
Took it back to the store tonight. Explained that this was the second time I was back in a month for the same problem and that I'd like to see about getting the mac replaced. The "genius" told me that coincidentally apple resolved the issue with the LCD panels within the last month, (how convenient) and that they can't replace it because its beyond 14 days from the time of purchase.
He went on to say that apple switched the manufacturing company of the panels. So I said are you going to give me the same line when I'm back in a month for the same problem? It got me no where.

Basically I'm getting the shaft again. We'll see how long this one lasts.
 
I have since had my panel replaced by Apple, and have taken great care since then to make sure its never dusty or gets too hot. I had Windows 7 Boot Camp installed on my iMac when I developed those blotches, and I often noticed when playing games in Windows the computer got massively hot. Thinking this may have caused the black burn on the screen I have not since reinstalled Boot Camp. Just wondering if everybody here who's had this problem happened to be using Boot Camp as well, or some other software that might cause extreme heat.

The problem has not since reoccurred on mine.
 
iMac27 said:
Took it back to the store tonight. Explained that this was the second time I was back in a month for the same problem and that I'd like to see about getting the mac replaced. The "genius" told me that coincidentally apple resolved the issue with the LCD panels within the last month, (how convenient) and that they can't replace it because its beyond 14 days from the time of purchase.
He went on to say that apple switched the manufacturing company of the panels. So I said are you going to give me the same line when I'm back in a month for the same problem? It got me no where.

Basically I'm getting the shaft again. We'll see how long this one lasts.
Click to expand...

Well that's a lie. No one but LG makes these things. Too bad that impressions of a company's service can depend sometimes on just one person's actions. I've had pretty good service at the Apple Store's myself.
 
Well now it's enough... this thing is growing so Applecare will come.
I will let you know how it goes.
 

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Just posting to share with you guys that my brand new 2 month old 27 i7 iMac developed similar problems on the upper left and right of the screen. Perhaps the heat has a denigrating effect on the screen? This one does get much hotter to the touch compared to my C2D iMacs...



Will be sending this to the shop soon.
 
24" Spotting

My 9,1 24" iMac is starting to show signs of this issue. It's not as drastic as the pictures in this thread but it's enough for me to notice, especially when Google or a similar white screen is on display. I've lived with it for a month or so now but fear it's getting worse. Just wanted to throw in my hat in on this issue. This is on the latest 24" from the last gen of iMacs 3.06 Ghz C2D Ati 4850. I'll pull and spray on my own this w/end when I have time but this thread makes me fear replacement {read: a pain in the a$$ hassle and going without my iMac}.
 
a small update about mine...

So far so good, they replaced my display a second time in the beginning of the month, and so far no spots. This time frame after the first replacement they were well back and noticable, so hopefully they resolved it.
 
I just discovered these spots last month on my 21" iMac I bought back in November.

It is within one year, and I have AppleCare, is it best to bring it to the "genius" or call someone?
 
I would just bring it to apple. Their just gonna tell you on the phone to bring it in anyway.
 
sorry to you guys first you get yellow tinge then apple is replacing the yellow tinge with a grey bar , then they replace the grey bar with black spots
i guess apple should react now and change the the manufacturer for the screens as soon as possible .. there are other manufacturer of screens out there out there maybe not a glossy , but thats not really a downside if the screen would be less glossy and reflecting

and there is another downside if you ever want to sell your imac in a year or two , i honestly would not recommend anybody to buy a used 27 inch iMac of the first generation
 
I know it has been over a month now but I finally sent my unit to an Apple service center. Nope I don't live in the States so no Apple Store here.

I had a short chat with the technicians at the shop and he told me that they still need to have to ask Apple's decision on the replacement. They also told me some worrying news, there was a customer before me who also had the same problem with the same 27 inch iMac and the repair was flat out refused by Apple because of "it was caused by environmental factors such as smoking, humidity etc."

I hope they do not give me the same line as our office is fully air conditioned, no one is permitted to smoke and really clean as a sanitized hospital room. Anyway I'll update whatever happens to my baby.
 
krizko said:
I have since had my panel replaced by Apple, and have taken great care since then to make sure its never dusty or gets too hot. I had Windows 7 Boot Camp installed on my iMac when I developed those blotches, and I often noticed when playing games in Windows the computer got massively hot. Thinking this may have caused the black burn on the screen I have not since reinstalled Boot Camp. Just wondering if everybody here who's had this problem happened to be using Boot Camp as well, or some other software that might cause extreme heat.

The problem has not since reoccurred on mine.
Click to expand...

Hmm you maybe on to something. I did notice the black spots only right after I let my nephew install and play Dragon Age Origins on my iMac for a couple of days. The game does make my iMac really really hot to the touch (but never beyond 80c). Perhaps it is less caused by dust/humidity but rather the screen burning because of the heat.
 
Okay just an update guys. I sent my 27 inch iMac to an official Apple Service Center for repair. The local repair center sent the case description and photos to Apple Asia and it was rejected for warranty repair. The techs at Apple Asia reasoned that it was caused by (you guessed it!) "Environmental Problems such as smoking, extreme humidity etc" which I dispute because, as I said in my other post, not only is our office clean, smoke free and air conditioned 24 hours a day, but in the very same office are older Aluminum iMacs that have been there way before my 27 inch but never developed any screen issues. So I had to call the Asia Applecare hotline to politely ask them to reconsider my repair. They told me that they will review the issue and get back to me in a day or so.
 
I had this problem on my 24" and as they had replaced the screen twice already they swopped for my current 27". This is about 3 months old and am getting the same problem.

I understand that people say the environment makes a difference but this never happened on any of my iMacs before the Aluminium and Glass design. Anybody else got anymore pictures or advice apart from another new screen?
 
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