I bought thermal paste to apply to my 2008 MBP (to prevent the heat issues) as well as in case of another repair for my 2011. He actually found a spare logic board and had it shipped to a local Apple Store. I asked to speak with a supervisor after they claimed they wouldn't be able to, spoke with the supervisor/specialist whom offered to comp a repair at an Apple authorized repair center. FWIW, in May or June this happened to me and so I called Apple expressing my being a loyal customer and wanting to keep it that way, if they'd be willing to honor the repair for my "vintage" MBP that would be an act of good faith on their part. I'm so sorry to hear about all of your issues. which one of the two is the problem? the built in one or the AMD Radeon HD 6770M? I don't know enough about this. I am now trying to find out if there is a way to get a used graphics card. (One thing that helped me was that I was using Lion and I had them upgrade to OS X. and restarts several times and only SOMETIMES actually boots up but freezes up when I try to open my Photo program. Right now if I do ControlOptionRP to boot up.it shows lines several times. because I have so many expensive programs such as Photo Shop on my computer I will lose them all. I think Apple should have replaced everyone's computer after the first replacement failed. I went to iCare in Chiang Mai Thailand and was told the graphics card is broken but that they cannot get the part from Singapore because it is over 5 years old. iMac (All models up through 2020, except the following 21.I agree, I actually have had to have my logic board replace 3 times!!! and now in October I had a screen panic with lines and I could no longer boot up.The below Mac models have user-upgradeable RAM: We wouldn't recommend trying this unless you're extremely experienced with electronics and your machine is already out of warranty. Some newer iMacs technically have user-upgradeable RAM, but doing so requires extensive teardown of the machine. Recent MacBook Pro and MacBook Air models have the RAM soldered to the motherboard. Unfortunately, most modern Macs don't allow you to upgrade the RAM yourself.
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