Is anyone using an Xfinity cable box. I hooked the cable in the entertainment center to the RF in on the cable box and ran one from the RF out back to the Cable/Sat panel. Nothing. I had no problem with cable at parks without a box and my sat box worked fine once I had run an HDMI cable from the sat box to the TV. The cable box had been sitting unplugged for almost a month. Was working fine when I removed if from our old trailer. Any chance it has been deactivated?