I have spent literally hours trying to solve what seems like a simple issue but I am at my wits end! I have a new Denon X2500 AVR and am trying to connect to my 65DX900 TV. I have been through both manuals and have checked the HDMI settings so many times I dream about them. However, I cannot get the TV sound to the AVR via ARC. I have spent time on the Denon forum but despite loads of suggestions, it all seems to boil down to the AVR not receiving the signal from the TV. I have just installed a new HDMI high speed cable but this didn't help. The TV "sees" the AVR as the hdmi menus appear when the cable is detected. I am sure this is just a combination of settings issue as all worked well with my Sony soundbar a few weeks ago. Any suggestions gratefully received.