Grounding Problem affecting Sound?

[Loafers]

This is a continuation of the following thread.

Long story short computer wouldn't boot; I try many different PSU; I buy a fourth one, and it works.

After many months without sound, I finally got a speaker and installed sound; however, the audio is extremely choppy, sounds wavy, and makes echoes. I have a headphone and it appears to have the same issue so its definitely not my speaker. Could it be a grounding problem?

Being in a tight area, I had to make blind guesses where the aux plug was and noticed every time I missed and hit a metal part of the computer, it would make sSzszZszszsS sound. Its been awhile since I've had a speaker so I do not know if this behavior is normal, but isn't the computer case supposed to ground the electricity? I'm not an expert so maybe this is normal.

I have another case which I can't try until probably Friday, so any tips or suggestions leading up to then would be greatly appreciated.

Thanks.

 

[C1]

You could even have something like a bad component such as a PCI card that is a low level short to the case.

Recommend to pull the whole system apart, remove and inspect and reinstall the MB (do not remove CPU or heat sink). Test the system incrementally as parts are reinstalled/added back in.

 

[bononos]

Does it work properly if you assemble your pc outside the casing?
Its a good idea to plug the components together before putting everything in the case to make sure that nothing is clearly defective.

 

[sm625]

Plug your PC and monitor into the same outlet. Unplug every wire that goes anywhere else other than to your PC. If you still have audio problems using your headphones then its not a grounding issue.

 

[Mushkins]

Also make sure you don't have any 2.4Ghz wireless devices *anywhere near* any of your audio equipment. 2.4Ghz and speakers/subwoofers are like oil and water, it's an interference nightmare.

Toss your cell phone, ipod, tablets, whatever on another table and make sure your wireless router/modem isn't sitting right next to the subwoofer. I used to get awful audio issues when my router was too close to my PC, popping and static and all sorts of buzzing.

As for the poking things and having it make a noise, thats totally normal. Any electrically conductive material that has even a hint of a charge will jump through the cable and make crackling and popping noises for a speaker. Unless it's a big charge, its totally harmless. Just try taking the 3.5mm jack on a pair of headphones and touching it to anything metal to get the same effect. Under the right conditions even just touching the "live" end of an exposed speaker cable can cause it from the electricity in your body Pretty cool stuff.