On my model 522 when a recorded show is paused on TV1, one of the tvs on TV2 goes to black and white. If you hit back button or watch a recorded show on TV2 the color is fine. If you switch TV2 back to live tv it is black and white again until you unpause TV1 or go back to live tv on TV1. I have had the cable runs checked. They are ok. I had the tv checked. It is ok. I had my 522 replaced and it still happens on the replacement receiver. This leads me to believe it might be a software issue since it has only happened recently. I used the 522 in the same setup for around two years no problems.
