I have a Yamaha RV-V673 AV reciever and the x1 comcast receiver. I used all of the methods to enter a code on my XR2 V2 remote. I get volume +/- and mute to work, but will not turn on or off with the remote. Kind of an issue when powering off the tv, the yamaha doesnt power off. Does anyone have an idea on what to do? Thanks in advance!