Just bought Panasonic P50GT30 HDTV and Denon AVR1313 surround sound receiver. Have Comcast HD box. All connections currently via HDMI cables. Only way that I've been able to have Denon audio is to connect HD Cable box --> AV receiver in --> Av receiver out --> HDTV in. This works and sounds great. Problem is if AV receiver is off, I have no audio or video on HDTV. I don't want to always power up AV receiver just to watch TV. Is there a way to have audio and video work on HDTV without AV receiver on, and then just switch AV receiver on when I choose? On my ancient Panasonic tube TB, there was an option to just switch from internal speakers to external via an AV receiver. Only similar option on this TV just turns speakers off.