I set up my roku ultra to be able to control the tv power and volume. It works, But , the volume and power on my cable remote quit working. I had to reprogram it. Had to try several codes to find one that worked. The power and volume is all that was affected, channel button etc , still worked. They all worked before I set up the ultra. The tv remote continued to work fine. After reprogramming the cable remote, all is working again, so no problem at this time. Just wondering if it what happened is normal.
Try new batteries in the cable remote, by the way what's the model # of the cable remote?