I'm mystified - hope someone out there can shed some light! I'm working to connect my home theatre system, and cannot seem to come up with the right combination to make all go well.
Right now, I have connects as follows:
Cable Box > TV (through HDMI)
Cable Box Audio > Receiver (through Digital Optical)
DVD Video > TV (through component cable)
DVD Audio > Receiver (through digital coax)
Problem is, every time I connect the Digital Coax from the DVD to the Receiver, I get an annoying background Hum on my speakers - almost as though I'm getting feedback noise. Disconnect the digital coax, and all is fine. I tried a second dvd player with the following video connects to see if it made a difference:
DVD Video > Receiver > TV (through S-Video)
DVD Video > TV (through S-Video)
and still encountered the problem of background noise when connecting the digital coax...
Is my digital coax just "bad", or is there some other configuration I should be trying to work out to get clean sound?
Any help is appreciated.
(note: neither receiver nor DVD have HDMI inputs; receiver is an Onkyo receiver with one digital optical input and two digital coax inputs - i tried both coax inputs with the same result)