When I set up my Roku stick and remote, I connected it to an HDMI slot on my Onkyo home theater system. There was some activity to set the volume control button to regulate the volume. It worked perfectly. My TV was basically set at zero volume and the Onkyo responded to the volume button on the remote.
Something has happened. Now, both the TV and the Onkyo respond to the volume button. This causes a very slight echo effect as the TV and Onkyo are not perfectly in sync. How do I get the remote to ignore the TV?