Yesterday evening, I turned on the TV and found all channels were mostly black with a tiny bit of "noise" garbage every now and then. Recordings for several hours showed the same thing, as did testing every channel I had. Nothing - period - showed up. I restarted the TiVo and problem was gone. Tonight, same problem. I'm a FiOS user with a year old Premier XL and have been happy up to this point. Any ideas?