I blew the dust out of it religiously and never smoked around it, but I had a sneaking suspicion that after 5 years, the heatsink compound was no good anymore.
Today I bought a tube of Arctic Silver 5, and opened her up to this:


Sure as shit, the heatsink compound was completely hardened and crumbling. The inside of the console was almost completely dust free. Suspicion confirmed.
I cleaned both the heat spreaders on the Cell and GPU, cleaned up the fan blades on the massive heatsink, put a fresh blob of arctic silver down for each chip, and put her back together. Afterwards, I let it run a little folding at home to really get it heated up.
I can happily say that it idles very quietly now, and I feel a lot more confident that I will be able to squeeze another 5 or more years out of this little black box of joy.
I recommend doing this to anyone who is running a non-slim PS3 of that many years of age. It really wasn't hard to do at all. The only part that required any real effort was just making sure to be careful when disconnecting ribbon cables, and remembering where all the screws go.
Here is the YouTube video I watched to help me figure out how to disassemble the thing.
http://www.youtube.com/watch?v=VFmV9zNV ... ata_player
This was a pretty fun project actually. It's pretty cool to see all the guts of the PS3, and it wasn't nearly as tough as I thought it would be. I regret not doing this sooner.



