FunkyPoopMonkey wrote:And where do you think the air comes from? The damn air vents! The DC has them on the right side and rear. Go look.
"Risk killing your system." I'm sorry, I don't see the risk buddy. You obviously have no knowledge in electronics (hell I have little, but I was able to do this). If you're scared to open up your console, that's fine. But don't try telling me that my system is going to die, because the fan is using up a minuscule fraction of the total power. It's not that fragile.
There are vents on the underside too, I believe near where there is a processor - not with air gushing out though, just looks like a heat sink that allows transfer of heat to the outside. On all my PAL DC's, these vents were partially obscured with a sticker (a laser warning sticker, if I remember correctly). Don't know if it will make a difference in the long run, but I took them off anyway. (Incidently, these bottom vents reinforce the idea that you probably shouldn't be leaving your DC to run on a carpet).
Also, about the power taken by the fan, are you sure that it won't wear out the power supply board quicker? Surely if you give components more work than their designed to do, then they will deteriorate quicker?
Of course, the components used may have been over-speced in design, so you might never see a difference. I just brought it up because I've seen a power supply board fail before any other board in a DC under normal operating conditions. There are probably lots of factors involved though, ranging from amount of hours switched on, to ambient humidity.
Anyway, best of luck with it.