I am having the same problems. I just switched to xfinity from DirecTV and am a little peeved at these issues. I haven't bothered to call tech support yet because it has been sporadic but my wife is getting seriously peeved since we are paying more and getting less seemingly. Turn the box on and I get a black screen, or the channel logo, with sound, but no picture. Or when trying to watch the DVR I get the "DVR" logo but no picture. WTH Comcast?? Anyone on here have any ideas as how to fix this or why it's going on??
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