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View Full Version : Re: K8NSNXP buzzes I think its DSP


Travis Jordan
August 21st 04, 08:55 PM
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.

aNOOB!e
August 22nd 04, 09:14 PM
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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Travis Jordan
August 23rd 04, 12:36 PM
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.

aNOOB!e
August 24th 04, 12:10 AM
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
August 24th 04, 01:26 AM
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" > wrote in message
...
>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.

aNOOB!e
August 24th 04, 05:13 PM
Tim thanks,

the Inductors are incased in the DPS and don't want to remove it as it
has a fan on it , hopefully, keeping everything cool. I stuck a pen
in and tuched the 1 I can get to. It didn't stop the noise. There are
probably many but cant get to then.

I scared the hell out of me as well. As i tuched the conductor the
head of the pen tuched one of the fan blades and scared the crap out
of me, lol.

I may grow some balls in the next few day and try your sugestion
properly. But in the mean time ill see if it goes by itself. Probly
wont but you never know.

Do you think it will go by itself.

Thanks again.

==============
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