I have a TDC776D and over the last couple of weeks, certain channels consistently freeze after about a minute of playback. Two channels in particular freeze all the time... 205 and 206... CBS and NBC. Unplugging the power to the box does nothing and after trying to contact support a number of times and waiting on hold for ever, I'm growing frustrated with this.
The box is maybe 3 years old. The only fix is to change channels and then return to the frozen channel until it freezes again a minute later.
Could this be a signal strength issue?