Yes, I had it, on my launch console, one of the final years of the gen.
I fixed it myself, wasn't that hard. Bought new, good, cooling paste; disassembled most of the console; cleaned up the CPU and GPU; heated both chips with a paint-dryer for a while; let them cool for a day; applied new cooling paste (and wasn't stingy with it unlike how it was); reassembled the whole thing; turned it on and hoped for the best. Lo and behold it worked. And it worked fine, up until this day. I did also paste on some extra feet on the bottom (hard cardboard cubes couple centimeters big) to keep it raised for extra cooling on the bottom. I don't know if that actually worked.
Obviously I didn't come up with the solution myself, I googled it, and figured I had nothing to lose. I also don't know if there's a severity in YLoD's between different people and I just got lucky. But whatever.
Anyway, good luck with yours, I hope it's fixable. 
EDIT: Saw your other reply. That's too bad. 
