TiVo lost signal for all but one channel after rescan

[Larry Sochrin]

I rescanned this morning, both a standalone TV and a TiVO connected to another TV.  The stand alone TV came through just  fine but my TiVO only has the signal for channel 7.1, and nothing for any other channels, although it shows the station names, logos, and program guide info but no audio or video. TiVo support isn’t open for an hour and I’m not sure what to do. Any suggestions?