I access Comcast TIVO. We get standard definition, high definition and premium channels in our package. Over the last few weeks (during which we are also having internet connection and speed problems), we are noticing that several channels, mainly HD channels such as rebroadcasts of local network channels, are just "black". Sometimes I get a message that it is searching for a signal. This seems to be a recurring and intermitten problems but it happens daily. I have tried to contact Comcast by Chat (over 3 hours the last time) to get the "black" or missing channels working. Some channels will tune in but they become distorted particularly if there is a lot of screen movement. The Comcast techs on chat have been less than helpful. They want to send resets, have me change channels and repeatedly unplugg and restart the TIVO. They did send out a new MCard and had me install that and pair it. However, none of the "scripted" steps have resolved ANY of the problems. I don't believe its a TIVO issue. I think its a problem either a) with Comcast account configuration (we actually get messages that HD versions of channels like TNT are "not authorized" but the SD versions seem to work as expected) b) a problem with signal quality or strength. Is there a number for a "upper level" tech department or are there techs on this forum who can actually diagnose and address these problems? Are there others on this forum who have had similar problems and got them resolved - and if so do you know what the problem was?
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