Question Ground Loop... PSU the problem???

[Urbercharger]

I have build with a 500 W EVGA (80+ WHITE) psu, and I have 2 audio interfaces with an xlr microphone, whenever I record or monitor my own mic and the sound, I hear the 50/60 hz hum in the background and its getting quite annoying, I've tried unplugging everything except for the interface, all cables from monitors and pc are plugged into one unit, made sure nothing else was plugged in my room.

I've also plugged into a laptop and tried it , the ground loop doesn't exist! So I am wondering if its my power supply, motherboard or gpu or ram orrr if I need to burn my whole pc lol!

Only hear it when I plug my mic into an xlr input.

any help is appreciated!!

 

[Deleted member 362816]

For what it is worth the White label EVGA psus are some of the noisiest I have ever used. I would assume it's most likely the power supply tbh. I know some video cards can interfere like that also but not as common.

 

[Urbercharger]

hmm this psu has been a problem at times but nothing too major.. I guess after some 5 years its time to let it go!

 

[Deleted member 362816]

As always if you want to stay with EVGA some good deals on bstock right now.

https://www.evga.com/Products/ProductList.aspx?type=8