I purchased a Panasonic E50 dvd recorder, and and had trouble hooking it up to by living room system. So I moved it to the bedroom and hooked it up to my TIVO and it worked fine. Here is my question. In my living room, here is my setup. I have a Mitsu 65" HDTV with a Mitsu Directv HDTV receiver. It would always allow me to hear the sound, but no picture. I moved it to the bedroom, and used it with the Directv TIVO unit, and it works perfectly. Are these not compatible because of my box?