need help with a Enermax noisetaker

[vortex240]

I bought a enermax eg425p-ve sfm powersupply, it works great but it has a 3pin (but only 2 wires)connector that should be connected to the motherboard and I have a asus a7v333. This connector is supposed to provide rpm for mb to monitor and shut it off or adjust the rpm. My mb has only a 2pin connector for this and when I rewiered the 3pin connector and connected it the psu fans work full max and its preety loud. If I plug the wires otherway around nothing happens and fans work at much lower speeds.

I wouldn't care normally but I feel that the 8cm rear exhaust fan on the psu works too slow even when I turn the knob on the back of the psu that regulates the fan to high the rpms do go up but its still not enough imo.

I'd like to able to find a happy medium setting, if its possible, any help would be greatly appreaciated on how I can make this work.
thanks

Wojtek

 

[amdskip]

Some motherboards just aren't cut out for controlling the fan speed in a power supply. My solution is that I replaced the fan with a panaflo but you may not want to do that as working inside a power is dangerous and a great shock potential.

 

[vortex240]

Thanks amdskip for the reply. Well I plugged the fan into a regular pwr_fan monitor on the mb and it shows the prm, doesnt' control it however. I think that replacing the fan is the only way to go but I need a 3 pin fan that shows the rpm as well because the stupid thing has a circuit that monitors it and when I disconected it the fans were going full speed. What can I say enermax has let me down. Their website and the manual were useless as well.

Wojtek

 

[Gamingphreek]

Not all fans have throttling. If it displays the RPM's right then its working fine. If you know its supposed to throttle and that your M/B supports it then send the fan back and request a new one.
Kevin

 

[Fern]

Hey vortex, same problem. Your post got me curious and I checked out my rig last night.

My psu is the eg425p-ve-sfma-rt. As you can see from sig, my mobo is the abit nforce.

My mobo has a 3 pin connector, but the wiring on the psu, like yours, is a 3 pin but with 2 wires. One black (ground?) and one white (rotational/rpm?).

Again, like you, my mobo (and MBM5) shows the rpm, but apparently, no way to control the rpm?

Further, it seems my manual control at the rear does not function. At least I can't notice any difference in the fan speed.

Although it appears my psu is for a p4 system, I don't know that that should affect anything.

I'm begining to think this psu does not support thermal throttling or speed control through the mobo. The Enermax manual does suck.

My -5 rail is producing a (posisitive?) 2.6 volts? WTF ? And my +3.3 rail is reading 3.61. That out of spec. Maybe I'll just rma it.

 

[vortex240]

Hey Ferm

My psu is well within spec as far as the rails go +12 = 12.256 +3.3 = 3.31 +5 = 4.98, even under heavy load. However the rpm control thing still pisses me off. The psu is for both amd and intel. I opened it up replaced the back fan with a faster one but because of the rpm monitor built in it still lowers the rpm to the same. So the next thing I did was attech the power of the 8cm to the connector of the 9cm and 9cm to 8cm connector hoping the 9cm got more voltage, but no luck same thing happened = same voltages.

I said f*** it and I'm just gonna install a case fan in the mibble of the top panel of the case. I'm still gonna see if maybe putting some kinda 10kohm pot on the signal(whitewire) does something once I connect it to my mb thermal control signal.

Wojtek

 

[imported_Phil]

If there's only two wires, one's going to be ground and one will be the speed-sense line, so yes, there is no way to control the RPM of the fan. If I remember rightly, the PSU itself will control the fan, I haven't seen a motherboard yet that will do this.

 

[vortex240]

Yeah thats what I though too but when I plug them in like I described in my original post the rpm would go max...?

How is that possible and the manula and their website also mentions rpm control.
weird

 

[imported_Phil]

Very strange. I wouldn't worry about it too much, leave it unplugged and just check the temperature of the air coming out of the PSU using the back of your hand. If it's very very hot, then bash off a quick email to Tech Support asking how it's supposed to work!