Static noise through front and back headphone jack

JoshR13 · Dec 29, 2017

I have quite an odd issue with my newly upgraded rig, being that when I listen to music (and pretty much only music, I don't hear the static on YouTube videos of people talking; for example.) there is a pretty prevalent static sound which I didn't hear before the upgrade.

I installed a new PSU, being the Corsair VS650 as my new 1060 has a much bigger power draw than my old Card. I don't really know what the problem might be; The HD Audio cable is firmly plugged in and there doesn't seem to be a problem with it. Is there anything I could try?

Thanks for the help

SoggyTissue · Dec 29, 2017

you have checked that you have not selected amplified sound in a sound manager/driver?

you using realtek onboard sound? em leak from power supply possibly.
check the psu is seated correctly and screwed in (the screws help with earthing to case like the mobo does) - also check mobo screws.
easiest way to ensure this isnt caused by possible faulty psu shielding is to replace the psu with old one and see if the static disappears.

InvalidError · Dec 29, 2017

While this isn't a certainty, the Corsair VS series (and the CX500/600) are of passable quality, which usually doesn't help with noise-related issues. If you can return it, get the CX550/650 which are newer and much better quality designs.

Onus · Dec 29, 2017

Odd that it happens only on music, but not voice. Check your sound driver settings; disable any special effects, including environmental effects, and retest.

InvalidError · Dec 29, 2017

Playing music (as in MP3) puts a much lower load on the PSU than playing videos. The noise could be caused by the PSU operating in discontinuous mode (noisier and much more difficult to filter) due to very light load.

Onus · Dec 29, 2017

^Although I'd expect a lower load to be easier to filter, you can test that theory by loading your CPU or graphics card with a benchmark while playing music.

JoshR13 · Dec 29, 2017

Onus :

Re-installed my drivers with default settings and it's fixed now. I guess I must have changed it sometime without meaning to. Thanks a lot!

Onus · Dec 29, 2017

Nice, this could have been a lot more difficult!

InvalidError · Dec 29, 2017

Onus :

In discontinuous mode, you're attempting to filter an irregular pulse train. That sort of waveform has very broad noise spectrum starting from almost 0Hz which is basically impossible to filter. Once the PSU load is high enough for the output to enter continuous mode (1-5A depending on the output filter components, switching frequency and minimum duty cycle), most of the noise occurs at the switching frequency (and its harmonics) at tens or hundreds of kHz, which is much easier to filter.

Also, as counter-intuitive as it may sound, heavy loads are actually easier to filter as the inductors (practically invulnerable to wear when sized appropriately) bear nearly all of the load current instead of the (much more wear-prone) capacitors. No need to believe me, run the simulations in LTSpice and see for yourself.

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