Fortron 400W damn loud?

[ubermu]

I bought a Fortron 400W under the impression that they were basically silent PSUs and now that I've installed it for my 1800+
oc'd comp I can hear it working when I'm 30 feet from my room. It's as ridiculously loud as my last PSU, so I KNOW it can't have any kind of "quiet" technology. Any advice?

http://www.newegg.com/app/viewproduct.asp?DEPA=1&submit=Go&description=fortron%2C400w

[Deathknight]

Hrm well the silent Fortron PSU is the 350W with 120mm fan. Your best bet would be to swap out the fan with a quieter one.

[Diggrr]

My 400 had that stupid stamped metal grill on the back of the fan, until I snipped it off using a pair of wire cutters.
That dropped the noise alot, not that it was really loud in the first place, I just hate those grills.

What's your case temp?, ya know it runs hella fast if the temps climb, then it did get loud. Mine only came on once like that though, as I got home in the middle of summer and the (house) AC was off.

[ubermu]

case is running at about 30c.

I checked the fan and it seems impossible to replace the wire ends are welded to some nodes on a PSU thingy ;p

[juliendogg]

Originally posted by ubermu
case is running at about 30c.

I checked the fan and it seems impossible to replace the wire ends are welded to some nodes on a PSU thingy ;p

some nodes on a psu thingy eh? lol. Well anyhoo, there are a couple different model #'s for the 400w, mine is with noise killer, the wires from the fan plug into a little circuit board which then goes to a little "node thingie" which is actually a thermal resistor which controls the voltage to the fan according to the temp of the sink it is attatched to. U can remove all that junk, and replace it with a quieter fan which will just run at 12v, or move the resistor to a cooler location. either way when the fan in mine runs full speed it is LOUD, but very quiet in normal operation.


J.

[ubermu]

So how exactly do I go by doing that? The node thingies I was referring to was actually where the wires from the fan were welded to the circuit board, I haven't even looked at the what that goes to yet. I do happen to have a Panaflo 80mm on hand which is ungodly quiet in comparison to what's going on here. I think I also have the same quiet model because it sais noise killer on the box as well, but I guess it just thinks my machine is constantly hot, at the moment the system is running at 31c and that PSU must be thinking that's as hot as the sun because I can barely hear myself type I swear.

So how exactly do I install the Panaflo? It came with a regular motherboard connector it was supposed to be used for a heatsink but I used a smart fan 2 instead. (I'm wondering if I should throw the panaflo on my cpu right now).

[Deathknight]

Here are a couple of guides on SilentPCReview.com(a pretty good source of info on running a silent pc):

http://www.silentpcreview.com/modules.php?op=modload&name=Sections&file=index&req=viewarticle&artid=83&page=1

http://www.silentpcreview.com/modules.php?op=modload&name=Sections&file=index&req=viewarticle&artid=9&page=1

[ubermu]

Thanks for the links but hte fan that's currently connected to my PSU is connected to the circuit board with welded wire ends. There aren't 2 open pins for me to connect the female end of my Panaflo to.

I'll go ahead and see if I can change the position of the thermal register so it picks up less heat. Hopefully that'll dissolve the problem though I'd still like to get a panaflo in there.

[Deathknight]

Hrm here is an article off the front page that you may find helpful:

http://www.overclockers.com/tips1033/

[juliendogg]

is the fan connected to a very small circuit board which is in turn connected to the main circuit board in the psu? that's how all the noise killer sparkles i've seen are. if that is the case, that little circuit board is the controller board for the fan, u can just take it out as well. and plug the replacement fan where ever that little circuit board plugs into the main one. That's what i did.


J.

[ubermu]

The wires are really wrapped tight so it's hard to see exactly where they're at. But from what I was able to see it seemed the fan was connected to a vertical circuit board that was glued to the bottom "main" borad. A lot of wires are around there packed tight so I couldn't see if anything else was attached to that vertical circuit board, it's back was faced to the outside of the PSU so I couldn't identify anything other than the positive fan wire.

[Deathknight]

Just a thought but how high are your case temps? If your last PSU was also very loud and this one is as loud as you say perhaps your case temps are so hot that they are forcing the PSU fan to run at full speed all the time?

[Koranuso]

i thought all fortran were supposed to be quiet

[ubermu]

My system temp sais 26c, I don't think that's too hot... how do you convert that into F again? :P

[dustybyrd]

My system temp sais 26c, I don't think that's too hot... how do you convert that into F again? :P

C*(9/5)+32=F

[ubermu]

Well this is what happened. I snapped off the chip like you guys said and my PSU suddenly wasn't able to work :< I think the PSU is permanently broken now, I noticed that the chip just wasn't glued onto the big chip but it was connected by a row of prongs. So I nabbed my old 350w Antec out of my old case, outfitted it with an L1A and now my machine's running beautifully quiet. Unfortunately 350w isn't enough to sustain my 1.7v overclock so I'm down to 1.6v @ 2300mhz now :<