It's hard to infer whether the yellow tinge problem has been resolved by Apple, but I thought I'd pass along a good experience with a week 08 machine I received on Saturday.
I had a week 46 27" iMac, and it had the yellow tinge issue, as well as a problem scratching DVDs and flickering. Apple replaced the display on that machine twice. The second display had no yellow tint, but a grey bar across the bottom. Ditto for the third. Apple finally opted to send me a new machine, which is the week 08 machine discussed below.
When the iMac is first turned on the display is very yellow across the entire screen - the worst that I have seen. After several seconds something happens and the yellow screen is replaced by a neutral grey screen that is really excellent. It stays that way until the machine is powered down. I'd guess that the color change happens because the screen calibration is changed, but there is no way for me to confirm that. It could be some tweak that happens in hardware during boot.
The good news (for me at least) is that the machine in normal use has a screen that is close to perfect, even though it is initially yellow at start-up.
A difference in this machine from others that I have seen is that the yellow tinge at start-up extends across the entire screen. In my first iMac the yellow tint was only on the bottom 1/3 of the screen.
Maybe Apple's answer to the yellow screen issue is to tweak the manufacturing process in a way that results in an even tint across the entire panel, and to then calibrate for it.
Screen panel data is:
Manufacturer: 610
Model: 9CB5
Serial number: 0
Manufacture Date: C67ADBF5
I had a week 46 27" iMac, and it had the yellow tinge issue, as well as a problem scratching DVDs and flickering. Apple replaced the display on that machine twice. The second display had no yellow tint, but a grey bar across the bottom. Ditto for the third. Apple finally opted to send me a new machine, which is the week 08 machine discussed below.
When the iMac is first turned on the display is very yellow across the entire screen - the worst that I have seen. After several seconds something happens and the yellow screen is replaced by a neutral grey screen that is really excellent. It stays that way until the machine is powered down. I'd guess that the color change happens because the screen calibration is changed, but there is no way for me to confirm that. It could be some tweak that happens in hardware during boot.
The good news (for me at least) is that the machine in normal use has a screen that is close to perfect, even though it is initially yellow at start-up.
A difference in this machine from others that I have seen is that the yellow tinge at start-up extends across the entire screen. In my first iMac the yellow tint was only on the bottom 1/3 of the screen.
Maybe Apple's answer to the yellow screen issue is to tweak the manufacturing process in a way that results in an even tint across the entire panel, and to then calibrate for it.
Screen panel data is:
Manufacturer: 610
Model: 9CB5
Serial number: 0
Manufacture Date: C67ADBF5
