My Tivo has no sound on certain channels, what should I do?

Question

Most of the channels that have no sound are channels 500 and up, which is HBO, STARZ, SHOWTIME, etc.

Answer 1

Also maybe you did not pay for those channels.  

Answer 2

This usually signifies a weak signal coming to your box. You can try power cycling your Tivo for 2 minutes. ( Just unplugging it for 2 min then reconnect). Allow it about 20 min to redownload all it's functions and see if this helps. It may only act as a temp fix, if so, contact your provider.

Hope this helps