PSU fan

fire_munki · 24 Mar 2010 at 22:17

Just tonight my PSU fans (intake and exhaust) have started to spin at max rpm continuously.
Is there anything I can do to slow it down? The air coming out is cold not hot at all? The psu has a 2 pin cable going to the pwr fan header on the mainboard. Can I instead add it to my fan control to slow it down some?

RJC · 24 Mar 2010 at 22:23

I think the cable is to monitor fan speed only.

fire_munki · 24 Mar 2010 at 22:25

Damn, guess it's time to put the cooler master 460W that cam with the case back in.

fire_munki · 24 Mar 2010 at 22:55

That was quick and painless. Old PSU back in and the machine is a lot more silent. Well as silent as one can be with a Scythe fan inside!

Fortune · 24 Mar 2010 at 23:22

could just be faulty fan bearings. you could replace the fan but would void any warrenty on the PSU.

fire_munki · 24 Mar 2010 at 23:49

Both fans were spinning super fast, its was only the normal fan noise they made. Just the rpm that's all. I could feel the air flying out the case.
New PSU doesn't have the intake and exhaust fan and now my cpu temp has jump by 4 degrees, boo!
Can I open the dead PSU to scavenge the fans? Reckon I could bodge one in to the two 5.25 inch bays I have free to get some more air in.

mymorph · 25 Mar 2010 at 05:11

ive taken fans from psu's with the intention of using them, but never bothered as they had been spinning for years and past there best. are you sure the psu is dead?

im too looking at adding a fan in the 2 or 3 free 5.25 bays ive got free, as since adding the gtx 260 my system temps are up 5-10c, its a big slab stopping good air flow from the lower front intake fan.

Audigex · 25 Mar 2010 at 11:58

If you open it up be VERY careful around the capacitors - they can hold charge for longer than you'd expect and give a nasty shock.

fire_munki · 25 Mar 2010 at 19:23

Righto, got the fans out, the have a two pin cable for power (red/back) and a two pin cable (black+yellow/yellow) that cam from the MB's sensor.
My fan controller has a 3 pin connector, (red/black/yellow) Any one know which ones from the fan need to be spliced into which from the fan control to get it to spin?