No sound on weather channel on new tv (TCL)

There WAS sound on weather channel in this tv, but then some reset was done, and now, no sound on just the weather channel. But weather channel on other tvs in house is still normal. 

also, in following automated system instructions on phone line, somehow the cable controller, which used to do everything, lost the ability to operate the on/off and volume functions, so have to use controller that came with TV for those functions. But can’t use it for cable-related functions (never could). 

also also, phone line kept saying id eventually be put through to someone if their automated instructions kept failing, but then it never actually put me through to anyone. At least, I certainly couldn’t figure out how to get it to fulfill that promise.