Hi there, I am plagued by an audio hum from the TV to the Surround receiver and it's only from the TV. I have investigated the ground loop idea and ensured all units were on the same pathway but the hum still prevails. I repeat, this is only from TV programs: not dvds, vhs, am/fm stations at all. Only the TV programs. Any ideas? I have been trying to eliminate this bothersome noise but cannot get around it. Any help would be appreciated. Thanks.