Antwoord op "Problem with NVIDIA GeForce GT 330M 256 MB?"@Ron - Check zzz's answer above, he seems to know what he's talking about. I've opted for a replacement board from www.aliexpress.com, a used but certified 820-2850 i7 2.66Ghz (same as I have now). It comes directly from China, money back guarantee, 90 day warranty, etc. same as Apple. Cost me USD 480 but shipping is free, delivery in 3-5 days. It's not cheap, but it is cheaper than coughing up 2000+ for a new current model running El Crapitan. Apparently the GPU can be replaced, as the one I'm buying has an AMD / Radeon CrossFire GPU instead of Nvidia 330, and I don't remember Apple offering that custom option back then, so I figure previous owner or "macexpert" the outfit selling it (http://www.aliexpress.com/store/208174) must have done the surgery. As mentioned previously in a similar thread (Can you install any A1286 logic board in 15" Unibody?) I'll report back when up and running with the new MB.
Antwoord op "Can you install any A1286 logic board in 15" Unibody?"Great topic guys, too bad I discovered it too late. Anyways, I'm one of the mid-2010 15" mbp 6,2 with the terrible 820-2850 logic board with the integrated graphics GPU. I knew it was a bad idea ever since it was given to me as a replacement for the previous Apple laptop horror story of the 2008 mbp with the GT 8500 Nvidia card and funny battery that use to blow up sometimes, but I figured if it kept working since 2011 doing cross platform and heavy CAD work without a hitch, I was immune this time around. Well the happy days ended about a year ago when it started crashing on mouse moves in MS Word and from then on every other day nowadays. Having missed the original Apple MB swap program that ended before I started having troubles with mine, I am going to do a logic board swap, so I read this thread with the greatest interest. I just ordered from Aliexpress a 820-2850 i7 2.66 logic board that - get this - has the original faulty-solder NVIDIA chip removed and replaced with ADM / Radeon Crossfire...