Out of all the PSUs I've opened up, the fans used 2 wires, (red/black) and connected to the PSU PCB. However these weren't the MOST recent and of the highest quality (300W no name psus)
To make a long story short, I have a power supply fan dying on me and I want to leave the server running while I get a new one to replace it...
(I don't want to take it out and look at it...)
So it's just the black and red wires? Do they have a connector on them or are they just wires (and I'm dealing with an old compaq ps unit so it's old...
Power supply fans are soldered into the circuit board. I don't think you could use a case fan as a replacement since the guage on power supply fans is mighty thick. Also I think that PSU fans are very high wattage!
If you are trying to replace the fan you might want to try a electronics store for a suitable replacement. You probaly going to buy a new PSU if the fan is out!
i was bored so i thought of a way you MIGHT be able to do it - but keep in mind i am not an electrical engineer so this may be dangerous....
1. remove screws for PS fan
2. clip the red/black wires (give yourself a few inches to work with - at least half the length of them)
3. get a replacement fan with 2 bare-wire leads
4. get two wire connectors - yknow... those plastic cap things you use to connect two wires...
5. connect red on red, black on black using the connectors - of course fan should start spinning when you do this
6. CAREFULLY screw in new spinning fan (grab it by the middle and stick a pencil or something in it to stop the spinning)
Possible problem - when you clip the wires you need exposed wire to make the circuit... I wouldn't recommend stripping a live wire (especially since I always do it w/ my teeth) but those wire connectors could possibly fix the problem - i don't know if they're conductive on the inside...
I currently use a PSU fan as a case fan - the only difference is that it's bare-wire... amps/volts/gauge of wires are the same... lots of people replace their PSU fans w/ silencers and panaflos and whatnot...
<< Power supply fans are soldered into the circuit board. I don't think you could use a case fan as a replacement since the guage on power supply fans is mighty thick. Also I think that PSU fans are very high wattage! >>
FWIW, I just took apart my Antec 400 watter and it's a 2-pin connector.
Actually, it's a 2-pin connector from the fan to the little thermal censor circuit board. The circuit board then plugs into the main powersupply board via another 2-pin connector.
1. get a 3pin case fan and attach it to a 3pin wire extender
2. screw the fan in
3. run the wire through wire exit-hole or vents in PSU (may have to remove/reconnect 3-pin connector)
4. plug extension into fan header on mobo
I just swapped a fan in an older (1995) power supply for a new sunon 3 pin. The connector was 2 pin, but the wires were reversed. So I turned the connector around and jammed it on until the plastic orienting tab broke.
Ham-fisted solutions like this are not the best, but they are quick
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