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Cooling My ANTEC PSU

S

SportyGuy220

Gawd
Joined
Jun 9, 2004
Messages
556
I noticed that my PSU's fans pull air in from the back and put it through into my case. I would this i should turn it the other way around to get hot air out. Im wondering if i should turn the fans around to make air go out the back and pull air in from the case.
 
i have never in my 15yrs of working on a pc seen a psu that blows into the case... even the old 286 and 386 psu's sucked the air out.. maybe you got a flub and someone installed them backwards... thow i find it unlikely.. i would say yeah.. flip em around.. but.. be warned opening that thing dose void warrenty, you might be better off returning it under warrenty and getting a replacement, as damage (althow unlikely) may have been done due to overheat internally (again.. unlikely.. but possible)

thore
 
thore said:
i have never in my 15yrs of working on a pc seen a psu that blows into the case... even the old 286 and 386 psu's sucked the air out..

thore
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Acutally Sparkle Power (or Fortron) sold an ATX power supply a few years ago with a bottom 80mm fan that sucked the air into the system. Obviously that didn't work too well and they never really sold it to anybody except for a few OEMs.
 
I see psu's that blow air in reverse now and again, they're usually from some oem system builders.

SportyGuy, buy any chance is your Antec psu a TruePower 380-S ? (single fan unit)
 
nope, this is a 430w PSU dual fan. I only say the air is blowing in becuase i dont feel any air blowing our of the psu. So this is why im wondering about this. If i do put new fans on this thing, does anyone have any ideas on what kind of fans are out there that blow really good. I dont really need a really powerfull one just enough to satisfy. thanks
 
If your good at soldering I believe you can always take the positive and negative wires on the fan and switch them around, this will run the fan in reverse. You should be careful when opening a psu though, there are tons of capacitators in them that store all of the voltage even when it's off; one misjudgement could cost you the psu and probably knock you off your feet.
 
-PK- said:
If your good at soldering I believe you can always take the positive and negative wires on the fan and switch them around, this will run the fan in reverse. You should be careful when opening a psu though, there are tons of capacitators in them that store all of the voltage even when it's off; one misjudgement could cost you the psu and probably knock you off your feet.
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Nope, doesn't work like that. If you hook it up in reverse, it just won't blow. To reverse the direction of flow, you have to pull out the fan and flip it around. The easiest way to tell which way it's blowing is that the side that isn't spining is the side that the air is blowing towards.
 
wow that does suck, I thought you could do that from some xbox fan replacement mod I read about a while back but I guess not.
 
SportyGuy220 said:
nope, this is a 430w PSU dual fan. I only say the air is blowing in becuase i dont feel any air blowing our of the psu. So this is why im wondering about this. If i do put new fans on this thing, does anyone have any ideas on what kind of fans are out there that blow really good. I dont really need a really powerfull one just enough to satisfy. thanks
Click to expand...

hahahaha dude, the air's not blowing in. The trupower 430's fan is SO pathetically underpowerd, it literally moves around 15CFM of air; in other words, nothing. I could never feel mine, or my friends either. Trust me on this. They do it for "silence"
 
No, you don't need new fans. The Antec fans do move very little air though. Make sure they are both indeed blowing in (I find it hard to believe both fans are blowing the wrong way). If that is the case, open the PSU and reverse the direction. It's fairly easy. Try running prime 95 to see if the fan kicks up a speed to tell if it really is blowing in.

[edit] Just in case you didn't know, the fans are thermally controlled. They will spin very slowly is your computer is just setting there idling.
 
-PK- said:
wow that does suck, I thought you could do that from some xbox fan replacement mod I read about a while back but I guess not.
Click to expand...
Perhaps they are a more simple and cheaper universal DC fan? I dunno, I just know there is enough circuitry in a modern PC fan that it won't work like that.
 
Vertigo Acid said:
Perhaps they are a more simple and cheaper universal DC fan? I dunno, I just know there is enough circuitry in a modern PC fan that it won't work like that.
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not only will it not work(with the blades spinning backwards.. ) but there is almost always a circuit build ontot the fan that keep them from spinning at all with reverse voltage... so even if you did hook the fan up with reverse voltage.. it sits there and dose nuthing.
(yes.. i've tryed it.. )

thore
 
I've actually read about Antec power supplies sucking air into the PSU in other forums. The first time I thought that the fan was just put in wrong, but I kept reading about it.

Oh, and some old PSUs do suck air in through the back and out through the bottom. I have one on a T-Bird Athlon system.
 
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