work or hdmi output? I have a Yamaha 5.1 Surround Sound System (HTR-6230) and cant get my xbox 360 to work or hdmi output. When I plug the HDMI cable from the hdmi out on the reciever to the hdmi on the tv i do not get anything no sound from tv or video. So i plugged in rca's and get sound but when i plug my xbox into the back of the reciever in the components part i do not get anything. any suggestions or ideas. I tried two different hdmi cables both do not work. even when i plug a hdmi cable into the tv and dont connect it. the tv doesnt recognize the connection. I have a Samsung 46' lcd. thanks for the help