Hello. I am having some issues with a new TV and an older receiver. For several years I have been using a Harmon Kardon AVR500 receiver with a Sylvania LCD TV. I ran the digital coax output from the TV into one of the digital inputs on the HK. The receiver has no HDMI inputs. It would display Dolby Digital and 3/2.1 or 2.0 or similar, and on the occasional TV program we would hear something from the rear speakers. When we switched between DVD and TV on the receiver, the volume level would be roughly the same. It all seemed to work fine. Last week we bought a Sanyo DP39843 TV, and I again connected the digital audio out on the TV to the digital input on the HK. Now the display reads PCM. When we switch from DVD to TV, the volume control needs to be turned up about 20dB to get the same volume level. Also we haven't heard anything come out of the rear speakers since we switched TVs, but we only have an antenna for TV signals rather than cable, and we didn't get many programs in surround sound before. Should we be able to get surround sound with this set-up, or could the Sanyo only be putting out stereo through the digital audio out? Is the volume level issue unique to the Sanyo, or would we have the same problem if we changed to a different brand of TV?