I have a Denon 2910 DVD player which when directly connected via a HDMI cable to my Sony Bravia 4100 X HDTV works fine. There is a coaxial cable from the DVD hooked up to the Yamaha RX-V1800 receiver for audio. Now want to connect an HDMI cable from the DVD player to the Yamaha and then to the HDTV to improve the sound. After disconnecting the old coaxial cable, I ran the HDMI to the Yamaha's DVD HDMI Input. Then I connected another cable from the receiver's HDMI Out directly to the HDMI Input 1 on the Sony TV. The receiver was linked (light on)to the DVD connection and the HDMI light went on. However, there was no picture or sound, just a black screen on the TV! I checked the HDMI cables and they are fine. I then tried another of the receiver's HDMI Inputs (SAT TV) to see if that was the problem but the same thing occurred again, nothing. Is there a switch or something either on the DVD or receiver that needs turning on? I looked through both Denon and Yamaha manuals and cannot see anything that relates to that issue. I am sure I am missing something simple here but need help in finding what I need to do!