Hi guys, I've been noticing a very annoying but faint background electrical noise in my headphones lately. They were plugged into the front headphone jack, which has the HDA and AC'97 cables, with only the HDA plugged into the motherboard.
I plugged the headphones into the back speaker output (green) port, and the noise was gone.
After a bit of googling, found that this can be caused my the components inside the case giving off electrical noise and being picked up by the HDA cable.
The internal front panel HDA cable itself is only just long enough to reach the motherboard jumper, not even long enough to route the cable properly, so it's touching the cooling shell of the video card, which just happens to be metal. Is there any household sort of stuff i could use to shield the cable? like maybe tin foil?
I mention the video card because the noise is most often heard when something on the screen is moving or changes.
Drivers up to date (VIA HD Audio)
Sannheiser HD202 Headphones
Antec Three Hundred Case
Asus M4N98TD Motherboard
Asus GTX560Ti OC GPU