iMac 27" Retina 5K Yellow Tinge (Late 2014)

Hi all,

I recently inherited an iMac 27" Retina 5K, after using it for a few days I noticed there was a yellow to blue tinge going from left to right.

The device is still under Apple Care, so I booked it in to my local Apple Reseller (Stormfront) and they sent it off for repair, I got it back last week and noticed it's now got a yellow tint across the bottom 1/3 of the screen. White's are tinged with yellow, greys look muddy etc.

So today I've gone back in with it, the girl I handed it over to said she couldn't see the problem, I showed her the difference in whites by opening multiple TextEdit windows and placing them around the monitor, still she couldn't see the issue. I suggested she get a colleague to look but she said he was busy with customers.

So she writes a note in her system along the lines of "I can't see the problem but the customer does".

She then says she can see a dulling around the bottom of the screen, but she thinks that's just a trick of the eye with the white background against the black border of the monitor. I know this isn't the case, I use professional IPS monitors on a daily basis, I know what is white and what isn't!

She assured me the panel would be tested, but considering I received it back with the problem I'm not so confident.

So now I'm waiting for them to either send it back without replacing the panel (because they can't see the problem) or repairing it and sending me back another panel with a yellow tinge or worse. If this doesn't work, I am going to have to phone another Apple store and travel a long distance in the hopes they will do something about it.

This has really put me off Apple products, after reading how many people online have the same problem I'm astounded that Apple haven't done more to rectify the issue. I've heard it happens in many devices including iPhones and iPads. I've even tested some iMac's in my local stores and noticed that a lot of them have the yellow/blue tinge and general backlight uniformity issues.

I was planning on buying a new Macbook Pro when the new models are released with Skylake processors, but if this is the type of thing I'm going to have to put up with, I don't think it's worth it. Trying to convince someone that a monitor is displaying colour incorrectly when they can't see it is extremely frustrating.

So, does anyone else out there own a 2014 or newer iMac 27" Retina 5K? Is your panel perfect or are you living with imperfections?

I know monitors are extremely hard to manufacture at a consistantly high level, but I've owned Dell monitors in the past and have to say I've never experienced a problem so widespread as this yellow tinge issue.