I've had my ENGTX480/2DI/1536MD5 GPU for 3 and half years now.
Over the past 2 months it started causing trouble. At first, it started seldom displaying big zones with
weird color, but simply turning my TV off and on again and it got back ok. Then it got worse. Under windows 7 x64, 340.52 driver, I got wierd pixalated screens, then screen would go black and the pop up, "driver stopped responding and was restarted" or something like that. Soon followed by 116 BSOD. It got more and more often. And completely random. Usually starts on windows, but once it happened, also occurs on boot screen. I can still use it, though I can never rely on it. It got unstable.
I have double checked temperatures, they were all under 60 C, under 69 worst cases. Auto cooling was working perfectly fine. I switched PC&C 910 W for a Corsair 750W, and nothing changed.
I've cleaned the gold fingers at first, checked for poor contact. Then dismounted the video card and got it all clean - no warranty anymore. The same goes on.
I have changed the video card for an old one and it works great, so I am sure motherboard is fine.
It seems to me a classical case of soldering issues over time. A reflow seems to be the last resource. I have checked over the net and the vast majority of people who somehow "baked" their GPUs and MBs got them working or living again, but for just some weeks/months. It seems clear to me that baking helped by changing the state of the solder, but done under the wrong profile!
Like many of you guys, I am a licensed electronic engineer and I have means to use a fully programmable oven. I mean an oven that supports programmable temperatures ramps and times. However, I can't find any temps and time profiles that are safe, indicated by any manufacturer or sustained by engineering professionals at all. Just found "i tried this", "do that", but no real references.
Does anybody know the correct complete profile for reflowing a GPU??