We used to have a 51 in high def tv in our living room when the color converge screwed up...while shopping for a new lcd hdtv, we put a sanyo in our living room with a philips remote. All of a sudden, starting lastnight, we have dvr and if on the guide menu or any use of the cable, it automatically switches from cable to the tv. If you try to switch it back to cable, you can press one button and then the next button you push it switches back to tv. I am at a loss on how to solve this problem. I know it is probably something fairly easy or simple to push, like a code or just a button. I am very good with technology and problems like this but can't seem to solve this problem. Any help is greatly appreciated and I thank you in advance!!