Sony STR-DG800 Receiver "hook rca surround sound lg" Questions

...hook these up to hear sound while watching the sat See if your satellite receiver has a digital out socket in the back ( optic / coaxial ). If so get yourself an optic/coaxial cable and link the TV ...

...hook this same device to my Sony STR-DG800 receiver using the DVD HDMI input plug (or the other HDMI input), I get nothing... no sound or video. I've tried everything, and it just seems that the HDMI ...

...hook it up to the AVR ? My first attempt was using the HDMI connection but this didn't work,presumably because the connection to the TV is by component cables.I've tried connecting component cable to ...