I bought my new 15" MacBook Retina Mid 2014 last November. I noticed that the screen had a pink tint at the upper right corner.. It was an LG screen (LP154WT1-SJE1).. I went to Apple service provider in KSA and had them to replace the screen. It took them an entire month to do so.. They replaced it with a Samsung screen (LSN154YL01-A01)
I was happy for about 10 days, then the flicker started, It was like this; Random screen flickering followed by discoloration and Image retention !!!!!!
I took it back again to the service provider, they ran an MRI check, and cable reset, but could not find anything wrong with it, so they returned it to me as it is.. Once I'm home, all it required is a little press on the power on button and the darn issue is there
So, and for the third time, I took it to the service provider, but this time with some captured videos.. They said they are ordering yet another screen for me.. and this would take them 2 weeks +, and also, are keeping it for further testing..
I should have kept the LG screen... I paid USD 2.5K for a laptop that has been in repairs almost as long as it has been with me.. I just can not believe this..
BTW Apple, your telephone support is a total rubbish, It is only as good as a one time sweet talk and the bye-bye with case number.. I feel that your system is designed only to get you of the one year warranty period, or simply forcing us to buy an applecare package, which is, first of all, not globally available, and secondly, will only keep us vising service providers with no real resolution..