Seasonic S12 380W making buzzing sounds?

andrewln · Post by **andrewln** » Tue Apr 04, 2006 6:06 pm

I just bought a S12 380W (new ver), has Sata, PCIE and its sleeved Adda Fan

It starts to buzz when it is in windows. The buzz is not constant, it goes on and off all the time. A very high pitch buzz sound, almost the same when the hard drive seeks.

Is this normal? and is there a fix for this?

THank you
Andrew Lin

System specs:

Silverstone SG-01 (BLK)
Seasonic S12-380
AMD64 3000+
Winfast 6150K8MA-8EKRS
eVGA 7600GT CO
Zalman ZM80D-HP
2xHynix 1GB
Samsung 250GB SATA II
Sapphire Theatrix 550 Pro PCI-E

jhhoffma · Post by **jhhoffma** » Tue Apr 04, 2006 7:17 pm

Are you sure it's the PSU? You can use the 'pencil trick' to stop the PSU fan and see if it is coming from there. If that's it, RMA it. If not stop all the other fans one at a time to see if you can stop the buzzing. Also try grabbing onto your PSU and other components while the computer is on and see if there are other parts causing vibration (resonance) problems.

There's no reason you should hear a noise in Windows and not when booting up, unless it were a noise coming from your monitor. In fact, you really shouldn't be hearing the S12 at all unless you are right next to it.

Hope that helps,

andrewln · Post by **andrewln** » Tue Apr 04, 2006 7:27 pm

Thanx for the fast reply

i'm using Viewsonic 2025wm LCD, and can't hear any buzz for it

My CPU fan doesn't run until 40C, system is around 35C, took out the video card, using the onboard (no fan)

Stopped the fan on the PSU...still can hear a buzzing sound

m0002a · Post by **m0002a** » Tue Apr 04, 2006 9:52 pm

Some motherboards make a buzzing sound from the coils. It is possible that the PSU has some coil noise, but this is not normal for a S12 PSU.

andrewln · Post by **andrewln** » Fri Apr 07, 2006 10:38 am

YOu are right. It was the motherboard making noice (PSU on top of the motherboarD)

it has the buzzing sound when it is at 1Ghz mark.

Thankx