K8NSNXP buzzes I think its DSP

[Guest]

Archived from groups: alt.comp.periphs.mainboard.gigabyte (More info?)

Hi, this is my first post and I realy need your help.
I have put together a "buzzin" computer, literaly lol (old sayin I
know but could't resist).
Here is the spek:

PSU: Antec TrueBlue 480watt. (don't think its this)
MB: Gigabyte GA-K8NSNXP-939 (nForce3 Ultra Chipset).
Processer: AMD 3500+ 64 Bit (939).
GC: XFX GEFORCE 6800GT 256 MB (omg its fast).
Memory: TwinX1024-3200XLPRO
Moniter: 17” TFT colour LCD E431s (this is the best moniter i have
ever owned).
HD: 2x Maxtor Diamondmax Plus 9 200gb Serial ATA150 (RAID 0).
Speakers: Logitech Z-680 6 Way 510 Watts Rms.
Mouse & Keyboard: Logiteck Cordless Desktop MX.

My computer is not over clocked.

The problem is that my computer continualy buzzez (well it's more like
a squeel) unless I move the wheel on my mouse back and forth. Then it
sounds like moss code (buzz stop buzz stop etc). And its' not my
mouse. The sound goes when wheeling the mouse.

The noise is comming from inside the computer arround DSP.When the
computer is going through diferent load fazes (more power needed then
not). It does the moss code thing again.
I have checked the fans for my GC and CPU etc, and it's not them
either, as I ran computer without fans to see if it was them. Yes i
did kak my self for the few second they were off, but I was v quick.
I can't stand the noise.
Any sugestions would be greatly recived no matter how stupid they may
seem, as its usually the little things that cause the problems.

I have built many computers before and never had this problem.

Also saw some one having problems with reading the cpu temp. I have
that prob to. My temp is 14c

When I scrole the mouse the noise dissapers not starts. Because there
is movement the processing is more, not a lot but a bit. Whitch leeds
me to think that its the DPS on the motherboard. The noise comes from
that direction as well.

The driver for 6800 is the latest (61.77). I dont think its this
either, I tried my Asus geforce2 gts in it and still made the noise
(still like this card, playing ut2004 with it and still has no
problems).

Have you ever watched tv on a wide screen when the pitcure is bright.
It makes the same noise as that. Its not my moniter. Tried it on
other machian. Plus old screan on this computer.

I also thought it could be the LEDs on the ram. more processing = ram
LED movement, don't think its this now.

As there is more processing required the noise stops. e.g. when
booting there's no noise at start, then processing settles down when
in windows and the noise starts again.

Very strange predicament. I know it's only a high pitched squeal. But
dam it does my head in. I want a near silent pc, water cooled the lot
(not watercooled at the min). Not hapening at the mo.

I awate you reply.

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[Guest]

Archived from groups: alt.comp.periphs.mainboard.gigabyte (More info?)

aNOOB!e wrote:
/snip/
> The problem is that my computer continualy buzzez (well it's more like
> a squeel) unless I move the wheel on my mouse back and forth. Then it
> sounds like moss code (buzz stop buzz stop etc). And its' not my
> mouse. The sound goes when wheeling the mouse.
>
> The noise is comming from inside the computer arround DSP.When the
> computer is going through diferent load fazes (more power needed then
> not). It does the moss code thing again.
/snip/
> Have you ever watched tv on a wide screen when the pitcure is bright.
> It makes the same noise as that. Its not my moniter. Tried it on
> other machian. Plus old screan on this computer.
/snip/

Sounds like a switching power supply - the chopping frequency is 20 - 40
Khz, in the same range as the horizontal oscillator frequency of some TV
sets. Try substituting another PS.

 

[Guest]

Archived from groups: alt.comp.periphs.mainboard.gigabyte (More info?)

Travis Jordan cheers for the reply.

I have decided it is the power freq. Its the only thing I havent
tryed. Tomorrow i'm gona try a diffrent PSU.

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[Guest]

Archived from groups: alt.comp.periphs.mainboard.gigabyte (More info?)

aNOOB!e wrote:
> Travis Jordan cheers for the reply.
>
> I have decided it is the power freq. Its the only thing I havent
> tryed. Tomorrow i'm gona try a diffrent PSU.

OK - let us know what you find out.

 

[Guest]

Archived from groups: alt.comp.periphs.mainboard.gigabyte (More info?)

I changed the PSU and it didn't work.

Someone else had the same proble, but with a diferent giga-byte MB. He
said it came from the volt chips next to the CPU. Mines in that sort
of area. His went after a week. Hope mine does. Could be a giga-byte
MB thing.
Any one else had this problem with a giga-byte MB?

Giga-byte haven't replyed to my e-mail yet, hopefully they will soon.

Any more suggestion keep um cumin. I've ran out of ideas. Except get a
mew MB.
Any sugestions for a sk 939. has to be highly overclockerble.

==============
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[Tim]

Archived from groups: alt.comp.periphs.mainboard.gigabyte (More info?)

Hi,

Buzzing is often due to inductor / transformer windings.
The DSP and motherboard has a lot of small inductors, so you could try using
a plastic pen or some such and press the windings on each conductor in turn.
You may be able to identify one that has not been wound tight enough... Then
*maybe* use some epoxy or other method to tighten it up. I would check the
temparature of the component first as if it runs hot many some "epoxies"
will become elastic.

On 8KNXP rev 1's in the days before Prescott, people often ran the system
without the DSP. I am not advising this, you may wish to try it at your own
risk.

- Tim



"aNOOB!e" <dj_oates@hotmail-dot-com.no-spam.invalid> wrote in message
news:412a7963$1_5@news.athenanews.com...
>I changed the PSU and it didn't work.
>
> Someone else had the same proble, but with a diferent giga-byte MB. He
> said it came from the volt chips next to the CPU. Mines in that sort
> of area. His went after a week. Hope mine does. Could be a giga-byte
> MB thing.
> Any one else had this problem with a giga-byte MB?
>
> Giga-byte haven't replyed to my e-mail yet, hopefully they will soon.
>
> Any more suggestion keep um cumin. I've ran out of ideas. Except get a
> mew MB.
> Any sugestions for a sk 939. has to be highly overclockerble.
>
> ==============
> Posted through www.HowToFixComputers.com/bb - free access to hardware
> troubleshooting newsgroups.