Enermax dual-fan PSUs, need this..

[hmcgrath]

The 92mm internal fan on my Enermax 365, was running at full tilt. The 80mm exhaust fan was temp controlled. This makes zero sense. The hot air was spilling out of the PSU vent and back into the case because the 92mm fan was moving more than the 80mm exhaust. The 92mm fan is darn loud as well.

Warning: If you have never been shocked by a PSU then don't try this until you have. Also, after cutting power to the PSU, hit the power button on your PC and drain the power, as well as letting it sit for about 6 hours too.


Open up the PSU, with the four screws surrounding the label. The panel should easily come off.

Don't touch anything in the PSU except the power connector for the 92mm fan. Pull it out, run it out of the PSU somehow (by making a suitable hole in the grill). Now you can connect it your motherboard or to a 4-3 pin adapter and use either a voltage modded connector or the 7V trick to make this fan run at a lower, quiet, and cooperative speed.

There is no sense in running this fan to move more air than the 80mm exhaust fan. It actually will put hot PSU air back into your case. Now that I've done this and run the 92mm fan at 6 volts the Enermax "Whisper" actually lives up to its name.

[mw521]

HEHE! you musta got cap zapped! Did you touch a power capacitor on the psu? Some of those things store quite a whack of electricity for a good while!

[hmcgrath]

actually after I removed the grill that faces the DVD& CDRW drives, If I am working over there, and let my hand touch just the heatisinks, I get zapped.

One time I picked the whole case up involuntarily and let it back down, sort of abruptly.:)

what was it the "Great Outdoors"? "six six six six six sixty-six times."

[mw521]

Originally posted by hmcgrath
actually after I removed the grill that faces the DVD& CDRW drives, If I am working over there, and let my hand touch just the heatisinks, I get zapped.

One time I picked the whole case up involuntarily and let it back down, sort of abruptly.:)

what was it the "Great Outdoors"? "six six six six six sixty-six times."
Maybe it just doesn't take you long to look at a power supply! You probably got cap zapped, of static zapped. When working with any kind of power supply (specially those with big caps) just discharge them. Caps are the big round barrel shaped things on your psu, usually black or blue. Just touch an insulated screwdriver to the leads going to each one. (look on opposite side of circuit board) short them together and it will discharge them. To get rid of a static charge just touch your finger to the case of the computer. (always do this before you pull your boards or work on your computer!);)

[Intraveinous]

Aren't you supposed to have a fairly large resistor wired to the screwdriver in one way or another to discharge em??? I've saw some kid try to discharge a capacitor with a screwdriver once, ended up with the capacitor being a permanent attachment to the screwdriver, as it had welded itself to it. Needless to say, he wasn't very happy about buying a new Amplifier.
Also liked this line from the original post:
Warning: If you have never been shocked by a PSU then don't try this until you have. Also, after cutting power to the PSU, hit the power button on your PC and drain the power, as well as letting it sit for about 6 hours too.

Well what fun is it to go playing inside a PSU if you've been shocked by one before??? :D I understand the meaning of this sentence, but yeah, "Dont try this until you have"... :D Just as a public service, I will be setting up a booth to shock people with a PSU so that they are able to continue with this project. :D
Also, 6 hours may or may not be enough. Some capacitors will hold a charge for days, weeks, or even months. I once had an Apple Mac SE that I was going to turn into a fish tank. It was given to me, and I powered it up to see what was in it, etc etc, then decided to gut it for the tank. Knowing that I'd be having to play with the monitor part, I wanted to try to discharge it completely. I left it out in the garage plugged into a wall outlet with a power cable that had only the ground pin still on the plug, with the switch turned on. It sat like this for a lil over a month. Needless to say, while I was playing around with the tube trying to get it out, I got somewhere in the neighborhood of 50KVolts... Burned my hands a lil bit and knocked my on my a$$ for about 15 minutes... So yeah, BE CAREFUL is the moral of the story, no matter if you leave it unplugged for 6 hours or not...
Peace
John

[hmcgrath]

I agree completely... That would be why I started the next paragraph off with this...:)

Don't touch anything in the PSU except the power connector for the 92mm fan.

and I hope you see the humor in the italic section. Although if you've REALLY been shocked, you probably wouldn't see any humor there.:(

enermax psu, anyone?

[Stephen Castles]

I have an enermax 350watt, and both fan are tempuature controlled, when i first turn it on they are barely moving but as time passed they both start speeding up, i think enermax should have used better fans, like Panaflo fans instead of Globe or whatever they use

[mw521]

Crt's got about 50 kv or more and will knock you on your butt. I have discharged many with just a screwdriver. Just go from a frame ground to under the big red wire connector with an insulated screwdriver. (I don't recommend this if you are not familiar with what you are doing though) Large caps say the size of a drink can or larger can hold a heart stopping dose for a long time. Just stay away from them. Computer supplies are just enough to shake you up a little (unless you got a pacemaker!) I think he introduced himself in the circuit while it was running and got a smack. I have been "bitten" by about everything up to and including 480 volts and it is not pleasant. The moral is be careful around power supplies you could really get hurt if you aren't.