Hi,
Just a thought. I like silent computing and my Amiga 4000 has a power supply fan blowing air the wrong way. It's a known problem that quite a few A4000s are constructed this way, the fan is blowing hot air into the power supply and not out of the chassis.
Now, my questione is this: is it a very bad idea to just remove the fan completly? This A4000 is quite cold, the CPU is a 68060 (CyberStorm MK2) clocked at 50 Mhz. What risk would I be running? I guess the 68060 wouldn't overheat, but what about the power supply?
Just a quick note.. Get a quiet fan and have it point out of the chassis! The fan should not blow it's hot air on the cards or anything else.
The fan should draw thru the front and distribute around the cards cooling them and add the PS heat before exit...