Onkyo HTR500 Receiver "comcast lose sound tv" Questions

Comcast) I only get sound out of Right front speaker. Everything works with DVD, VHS, AM/FM radio. How is TV audio (from the cable box) getting into the Receiver? If digitally, you wouldn't be missing

...COMCAST HD box, no video from CD but do get sound, lost partial use of Zone 2. Zone 2 works if I have Main on, but then I cannot control the volume. Is this just a programming issue or has something ...

...sound as if the box they sell can very easily steal cable tv and you could very, very easily get away with it undetected. This info is very tempting (most importantly misleading) for most people, ...