Hi guys,
Here is my problem: I have this buzzing noise in my speakers until I turn ON PC.
My system hooked up as follows: from USB sound card into AUX Input of my HU. I used to have ground loop, so I got the ground loop isolator installed. It was just fine for few days than I got this noise back again. I grounded audio cable to the chassis and the problem solved. But in some time I've noticed that I have thin noise in my speakers when PC is OFF and HU is turned on AUX Input. If I switch to either CD or Tuner, this noise goes off. Also it goes off if I turn ON PC.
I just have no idea where to look for a problem.
I forgot to add, that I run laptop as carpc with Lilliput screen, The screen is wired to the back of cig. lighter thru molex connector and laptop is powered via inverter. Inverter gets it's power straight from the battery via relay.
Thanks in advance.