Asus A7N8X-X makes high-pitched noise - HELP!

[bearauto]

So I bought this motherboard to replace my old Soyo KT400, and it works just fine.

My problem is that there's a high pitched noise coming from the motherboard or cpu. It seems constant when my computer is idle, but when I am running some applications, it seems to stutter.

Now get this, when I play a video, the noise is completely gone.

Therefore, it appears that an increase in CPU Load decreases the noise. But it doesn't seem like the noise is coming from the CPU, though I can't say for certain that it's not.

Have any of you had this problem? What can I do to eliminate this noise without having a video constantly running in the background?

Thanks

 

[SLEEPER5555]

its defective you need to swap it out. it is a bad CAP that can take other components with it when it fails so stop using the computer now!

 

[ChineseDemocracyGNR]

This problem is not uncommon on the ASUS A7N8X series. If I remember it right, it comes from one of the coils from the Vcore regulator.

 

[bearauto]

Originally posted by: SLEEPER5555
its defective you need to swap it out. it is a bad CAP that can take other components with it when it fails so stop using the computer now!

What's a CAP? And are you serious? LOL

 

[bearauto]

Originally posted by: ChineseDemocracyGNR
This problem is not uncommon on the ASUS A7N8X series. If I remember it right, it comes from one of the coils from the Vcore regulator.

I read that in the hardwareanalysis thread...but the problem is, I've tried depressing the coil with the rubber eraser on my pencil, without any minimization of the noise. In other words, I can't locate the source of the sound.

 

[SLEEPER5555]

yes i am serious i had a powersupply with the exact same problem, it was a capacitor that was failing, :|

 

[bearauto]

Well, I got a response from Asus:

Please check that the MB is not picking up EMI interference or improperly
grounding against the case. Please remove the MB from the case and set it
up DIRECTLY on the cardboard box it came in or some other non-static,
non-conductive surface like a telephone book. Connect up everything to
the MB and see if the problem persists. If this corrects the problem, you
will need to electrically isolate the MB from the case. You will need to
use electrical tape over the brass stand-offs that support the MB to the
case and use the red paper washers between the screw heads and the MB.
The red paper washers should have came with your case hardware or they can
be purchased at Radio Shack or a computer store. Also double check that a
motherboard standoff is NOT placed in a spot where the motherboard is not
designed to be grounded, as some cases will have different standoff
locations to accommodate different styled of motherboards. Also check
that there are no other metal objects that could contact the motherboard
or any other electrical device attached to the system, such as a metal
burr, loose screw, metal rod, or any other object that could cause a
short.

I'll let you all know what happens when I try this!

 

[Sardian]

I had a board that made a sound like that once and once I took it out of the case and hooked it up it didn't do it any longer.

I put it back in the case using insulators and that fixed it.

On the a7n8x I had it would make a sound that was high pitched but it came out of the speakers. I think it was better if I muted the line in.

Good luck

 

[bearauto]

OK, I put in insulators, but the sound is still there...bah. I've resorted to just playing a vid in the background to eliminate the sound. Asus better have a solution for me.

 

[bearauto]

Still no solution...asus is ignoring me.

 

[ChineseDemocracyGNR]

RMA the board.

 

[yelo333]

Try a different PSU...sometimes, that's what causes it.

Edit: [Forgot this] Apparently, even if the same PSU didn't do this with one set of components, it very well might with another. Something as simple as swapping out the vid. card might also fix it, if this is the case.