Hello all..
I have a late 2011 MBP.
It began...
Upon opening from sleep, the machine displayed graphics problems, went grey, and then blank. I did a hard restart numerous times, and had key and sound functionality but no display.
I took it to the apple store, and they diagnosed a logic board problem, and said they could fix it for the flat $310 fee (I am out of warranty). I needed to back it up, and took it to a third party to do so. Once the third party had the machine, I had them run diagnostics (for crossreferencing) as well as do the back up. Their tests revealed a failed connection from logic board to display.
I took it in to the apple store for repair, and it was done three days later. I was quite happy with this fast turnaround, but something raised a red flag for me--they had replaced the entire display, the RAM, AND the board. Seems suspicious.
I had the machine back for all of 3 days before I began to get freezes and hear beeps indicating bad RAM (which has a long discussion thread on this forum). Clearly, it wasnt that the RAM was loose, which is the first solution the Genius suggested. These freezes typically happened with a heavy graphics processing load, and once it started, would happen continously unless I shut down and allowed the machine to cool (though this would buy me three hours at most, under light processing loads). I had been warned in another thread on here that other folks were having this problem with replacement RAM (sorry, I cant find the thread again).
I have now taken it back in to Apple, and as they were testing it, the screen went blank on cue. They confirmed it was likely bad RAM, and sent it away to be repaired. I also let them know that I hadnt heard the fans kick on much past 2k RPM for a little while (even under processing strain), so now I am wondering if they will just replace the RAM or do some real digging. So, pay attention to your temperatures. I am currently waiting to get it back...and to Apple's credit, they are fixing it for free as it is covered under the 90 repair warranty.
I posted on this thread because I wanted people to be aware of what they might expect if they have logic board problems in their 2011 MBPs...and to encourage them to do some digging on the forum. This problem has now reached a tipping point (During my last three visits to the Apple store, the person sitting nearest me was having a logic board problem on an '11 MBP). It is a significant issue.
I dont think anybody at Apple really knows whats wrong (hence the original board, display, and RAM replacement). At this point, I suspect that my issues (again, for my late 2011 MBP) are a result of one or more of the following:
1. bad RAM batches
2. bad AMD graphics processor batches
3. an overheating issue (not exactly sure what source might be)
4. bad logic board batches
Be sure you are persistent about getting Apple to adhere to the $310 flat repair fee. There is obviously at least one hardware problem here, and perhaps a soft/firmware issue as well.
I'll update if Apple replaces anything more than the RAM, or if something else significant happens.
Best of luck!