"So I got Macfixit email quoting this from this thread: Gunnar Forsgren wrote: Apple has declared these machines end of life so the days of class action suits is done with. But the best solution I found is sending the laptop in to guys who replace the GPU chip on the motherboard with a revised design new one. End of problem as long as overheating issues can be kept in check. ==============" WHAT GPU chip has a revised design, please? Last time I got mine replaced, I got this one: AMD Radeon HD 6770M: Chipset Model: AMD Radeon HD 6770M Type: GPU Bus: PCIe PCIe Lane Width: x8 VRAM (Total): 1024 MB Vendor: ATI (0x1002) Device ID: 0x6740 Revision ID: 0x0000 ROM Revision: 113-C0170L-573 Automatic Graphics Switching: Supported gMux Version: 1.9.24 EFI Driver Version: 01.00.573 ============ And a year later I’m starting to see flaky behavior again. Where, oh, where is the source for a reliabl fix or replacement? Detailed answer please, as I foresee sending my late 2011 17” hi-res off to someone fairly soon, again.
I had my (late 2011) MBP fixed in late 2016, the replacement part lasted 9 months and it's dead again. Apple wants $500 for another repair. Does anybody buy these things for parts? Nice hi-res matte screen, nothing else wrong with it according to the Genius who did the tests. Just the usual video board failure they never were able to completely fix.
> 3GB of the 4GB RAM might be addressable? Is this correct? Yes. Been there, did that. > If so, why 01 Apple wants you to buy a _new_ computer. 02 GOTO 1 > and can this be corrected with an EFI upgrade? Haven't seen anyone say yes to that.
You almost certainly left the little black wire disconnected, the one you remove before lifting the CD frame off the motherboard. Possibly you knocked the bigger wire to the actual CPU temperature sensor off while you had the memory exposed.