iMac 27" heat issue blurry spot on screen

Have you restarted the iMac? Did the blurry spot return?


Dah•veed

Hello, I had the same problem but with my iMac 21". I call here in Costa Rica to customer service abd they told me it was normal but i think it isn't so i need some help... the problem didnt stop in my case

I have the same "kidney look" spot in a section of my computer screen. I restarted, but did not solve the problem. I had this same problem several months ago, but it went away by the next day. Now I have it again.

Hi All
I have exactly the same issue, it just started this morning with my 27" Imac- and restarting does not help. Any other ideas, apart from sending the machine back to the shop? Is it related to moisture? Monsoon's just finished here and as the original poster noted, it looks a bit like mist or condensation.. It's very distracting! Any other advice would be much appreciated!
Cheers,
Rory

We also face the same problem. It comes back again after restarting also. it is new iMac just 1 month old 😟

I am facing the same..on my imac 24".. first time seen today 😟
It's covering a big part of the screen and it indeed looks like condens/fog... .

Model Name: iMac
Model Identifier: iMac7,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.4 GHz

Resolution: 1920 x 1200
Depth: 32-Bit Color
Core Image: Hardware Accelerated
Main Display: Yes
Mirror: Off
Online: Yes
Quartz Extreme: Supported
Built-In: Yes

Think I have this one since 2008 somewhere... too soon to die now.. :\

Update:

I shut down machine, let the large spot disappear.
So it seemed to be a heating issue then I thought.
Figured if it were the same issue as with an over isolated house without proper installation, it could well be a ventilation issue. So I vacuum cleaned every opening in case there would be any dust in any of the ventilation spaces block proper venting.

So far so good.. let's see how it keeps... .

Cheers,

Cedric

I had this issue on 27" iMac. At first I thought it was dirt on the front glass, so I removed the front glass (per instructional videos on youTube) and found that the patches of grey were on the LCD itself. Careful lint cloth wiping of the LCD had no effet on the patches.

I took the machine to Apple Repair center, demonstrated the patches to the staff, and the LCD portion was replaced under warranty. By that point (6+ months after purchase) the patches covered around 30% of the screen, but only visible when the background image was displaying a white/gray/light color; the patches were not evident otherwise.

I'm not an expert, but I think this issue may be due to the LCD being incorrectly installed too close to components in the rear (or being loose), causing some kind of burn. Whatever the case, our monitors should not have color patches under normal operating conditions, so (in my opinion) this fix should be covered by hardware warranty.