Can anyone suggest the likely place to point a finger, or something to do to determine where to do so...
My TiVo (Premier XL4), is connected to my cable provider (Cox, Orange County) via a tuning adapter. On live TV, on only 2 channels I can determine (1054/1057) the video cracks up and is unwatchable.
I checked the TiVo diagnostics and 1054 for example was on tuner 3. The signal varies from 75-78% and 0% (nothing in between), and the 0% stays there for a few seconds and it returns back up. On the other tuners their channels seem to lock OK to 75% or thereabouts.
Cox's initial supposition is that it's a TiVo problem, but I am not sure.