There is a ps3 internal fan mod, where you can add a potentiometer:http://forums.xbox-scene.com/index.php?sho...p;#entry4690002
I personally have reflowed a 60gb launch console successfully (*knock on wood!*), have done the fan mod to run at pretty high speed, used flux, c-washers on the clamps, and AS5 on the chips. Im now waiting on a cooler running APS-231 power supply for the unit, since the original super hot ZSSR5391A PSU went out. *I did the ATX PSU hookup power supply test on it to make sure no ylod came up and it powered up normally before ordering the part though...It made it able to get the game out!
The recent symptoms the PS3 had were those pointing to either a burned out fan, or a PSU issue, fan was tested seperately and worked fine. The red light shut completeley off before being able to even make the fan spin a little (after pressing the power button).
3 tips I recommend:
-AS5 or better thermal compound on the chips.
-PSU replacement (IF your console is compatible with the cooler running one)
-19 blade fan (if your console is compatible with that also)
And of course, the obvious "plenty of breathing room" applies.
*YLOD was "fixed" last week of may, has held online gaming abuse (nephews PS3!), no "chips related ylod" yet 'til this day and Im hoping it stays that way.