Why would one channel NBC have no sound? this just started, all other channels are fine..?

Question

13" flat screen TV, four years old, no other problems.

Answer 1

How long has this been going on?

Often, one network has little mishaps like that.

Check to see if it's the volume? TBS often has lower sound volume than other channels, see if it's the same for NBC.

Sorry if I wasn't much help :/.

Answer 2

I live in a tower block and last week lost all our signals. The engineers came in and found that one of our neighbours had hooked into our ariel. Talk about neighbours from h**l !!!  Hope the same has not happened to you