@erek, you're missing my point. Yes, your card does indeed works, and will hopefully work for many years to come. But pretty much all the graphics cards from around that time suffered from overheating, and were prone to cooking themselves. Mostly due to careless OC, small-size cooling heatsinks & fans, and (later on, as they got older) simply due to their age.
You want proof? I got 20+ Voodoo cards in my collection, and I even had 10 (or more) which failed on me at some point due to one reason or another. Mostly heat damage, VRAM modules going bad but I've had other & more serious problems as well. Usually starts out with random crash (and garbled textures), to the point where it doesn't want to work any longer, whatsoever. Not to mention a certain Diamond Monster (Voodoo1), which apparently has a problem with the actual GPU core. Because it works fine under "Glide", but refuses to run in Direct3D. Again, who knows what's going on with these things ... they will work for years and years, everything will seem OK and then one day they will simply shut off.
What makes V5 6000 even more problematic is that you're basically dealing with a prototype, so it doesn't matter how skilled you are with soldering iron &/or SMD work station - if it's a prototype, it will be next to impossible to find replacement parts. Assuming it's not something generic like a RAM module, or capacitor/resistor of course.