crwdns2933423:0crwdne2933423:0
crwdns2918538:0crwdne2918538:0

crwdns2934241:0crwdne2934241:0 toeknee25

crwdns2934249:0crwdne2934249:0:

I had this problem after I repaired the PS3 because the YLoD. I opened up the 3 again and noticed that the thermal paste was not making complete contact with the heatsinks even though they were screwed down tightly.

I decided to apply another layer of paste to both heatsinks and this seems to have quieted the fan down. You could try that

crwdns2915684:0crwdne2915684:0:

open