I did something similar on my own fat PS3 about a year ago. I agree it's a great feeling to find out you can fix something
.
It got the YLOD from God of War Ascension and I'd be damned if that dumb game would be the reason my PS3 died. If it became permanent, the PS3 would also have the dubious distinction of being he only console ever to have died on me.
But I fixed it.
Wasn't even that hard in hindsight, I used a paint-dryer-hot-air-gun-thing. I don't even know what it's called in Dutch, let alone in English. Anyway, after first cleaning out the console and all parts, I preheated the board from a distance for about 15 minutes than slowly circling in on both main chips to about a centimeter away for another 15 minutes. Let it cool for the rest of the day, then added on a layer of new cooling paste and reassembled the thing. It immediately worked like a charm and it's still working like a charm. In fact, it's less noisy that it's ever been!
I didn't mess with the solders directly though, but the console is still working perfectly a year later later so I must've done something right at least. 







