whining psu noise

[Gerczak]

Hi guys, I just completed a first build. All went well with the exception of one thing. Once windows has loaded, a electronic buzz emits from, I believe, the Enermax 350W power supply. It is definately not fan noise. The whining starts when I use the mouse or keyboard to scroll through the Windows' start menus, and stops as soon as I finish. Sometimes the noise just stays on until I tap the mouse or keyboard.

I swapped the psu to an older computer...no buzz. I unplugged my speakers and swapped the mouse and keyboard...buzz continues. I have an older, cheaper psu that I did not want to use on new computer out of risk of damaging it.

I understand that some psu normally make a whining noise. However I'm finding this noise to be annoyingly loud. Is this grounds to replace my Enermax psu?

Any help on this matter would be greatly appreciated. Thanks.

AMD2000+, Volcano9+, Asus A7N8X-DX
512MB Samsung (1 stick)
ATI Radeon 9500 pro
LG cdrw 48x24x46, Liteon DVD 16x
WD 40GB
Enermax 350W
Lian Li p65u
Windows XP pro

 

[lhgpoobaa]

wierd... have you opened up the case... are you SURE its comming from the psu.

i find it hard to believe something simple like mouse movement would cause the psu to make noise.
*scratches head*




<b>My Computer is so powerful Sauron Desires it and mortal men Covet it, <i>My Precioussssssss</i></b>

 

[Gerczak]

By carefully listening to various parts of the computer, it seems like the noise is coming from the psu. However, I'm confused as to why the noise went away when I installed the psu into my older computer. Could it be that some of my components are incompatible? Or, is it at all possible the processor could emit non-fan noises?

Also I should clarify, the mouse movement itself does not start the noise. It's when I use the mouse or the keyboard to scroll through the start menu items and programs that the noise occurs.

The noise isn't excessively loud. It's just becoming quite annoying.

 

[lhgpoobaa]

what about when the cpu is running at full load?
Any odd noises then...

it might be interferance, but ive got NO IDEA how that could happen.

<b>My Computer is so powerful Sauron Desires it and mortal men Covet it, <i>My Precioussssssss</i></b>

 

[Gerczak]

LHGPooBaa, thanks for your input.

I ran the computer on a heavy load (Prime95, a South Park episode on DivX, Asus Probe and an mp3), and noise becomes constant. When I shut down the programs, the noise ends.

I'll try exchanging the psu tomorrow. Thanks again.

 

[melb_angel19]

hmmm that is unusual... typically such wierd noises (if any) are attributed to a very poor psu taking its limits and the noise is associated with struggling fans and the like.

definately get yur PSU replaced. something is amiss in there.

<font color=purple><i>Melb_angel19</i></font color=purple>