So with my little technical ability I think I was able to discern that I am getting a ground loop. I get a 60 hz hum almost all the time that will randomly go away and come back. The only way I can assure that the hum goes away is if I unplug both my tv and my computer. (both are connected to my receiver) The hum increases and decreases when I adjust the sound. MY question is how in the heck do i get rid of it!?!? Thanks in advance for any help I get!