Long time lurker on this thread (from about page 50), first time poster, I might be able to help you...
3nids wrote:
Is there any limitations in returning the macbook within the 14-days ?
I mean how many times can you ask for a new one? 3?
It wasn't until my 7th machine (i.e. 6 returns) that I got one with a Samsung LCD. So there doesn't seem to be a problem with returning over and over.
My first was a 2.7/16GB/768GB and it was week 30 (all checked with http://www.appleserialnumberinfo.com)
After that I ordered 2.7/16GB/512GB because I decided a 768GB was overkill when most of my data is on NASes.
Had a machines from week 33, week 34, week 37, week 38 and 2 week 39s.
Every one (until 7) had an LG display. On the first one I did not notice IR until after a week. Did notice the yellow-tint and lousy brightness immediately. I called AppleCare about it within a week of delivery, and they wanted to me to take it to an Apple Store and give it to them for an indeterminate amount of time to get it repaired ( ! ) Yes, with a brand new machine and they wanted to "repair" it, not replace it!
After talking to Apple, I found this thread and ran the terminal command ( ioreg -lw0 | grep \"EDID\" | sed "/[^<]*</s///" | xxd -p -r | strings -6 ) discovering I had an LG display.
So I returned it under the No-Questions-Asked returns policy, and ordered another by myself. have not bothered speaking to AppleCare since.
All were pretty average, besides my fifth one, which was an LG, but it did have good brightness, and wasn't "too" yellow. It showed IR on day one - could not see when first turned on, but visible after the machine warmed up.
My belief is that big part of the problems with the Retina MBP is that the machine vents up and on to the display, exacerbating the problems with LGs AP-IPS technology. Just the worst design for a panel that doesn't like heat!
I didn't find returning and replacing the machine that much of a problem. I scheduled return pickups for the same day as the next machine was due. I work from home, and the delivery guy always came around 9am. The night before a would back the "old" one via Time Machine to my NAS (fast, since it was an incremental) and restore to the new one the next morning (about 30 mins). Before boxing up the old machine I would boot Parted Magic from USB to write zeros to the drive to completely remove my data.
After machine 5, I ordered 6 and 7 the same day because I wanted to be done with this. Both arrived the same day, only the 7th machine had a Samsung display, so I have one machine left to return. Being able to see both an LG and Samsung side by side the it is obvious that the LG display is inferior - less bright on maximum brightness, and a yellow tint (my wife also agreed when she compared them). And machine 6 with the LG shows IR within 5 minutes of a still image on day one.
This all seems very wasteful, but I tried AppleCare first, and they were no help. There might be a flood of "refurbished" MacBook Pro Retinas for sale soon!
While there may be "good" LGs out there, after 6 duds all from different weeks of production, I don't think there can be many!
When I first started reading this thread, I found this link posted by kevinjung helpful:
http://www.cyneticsoft.com/mbpretina