I had this same problem it restored the sound on my tcl roku tv.
Cable box spectrum no sound.
If you have audio on most channels but have silence on some or all of your local network channels you may have the secondary audio programming sap turned on.
Check your cables and connections make sure that your tv and cable box are turned on.
Not all channels broadcast sap signals.
Troubleshooting your spectrum cable box.
Was there a power outage recently.
I have sound but no picture.
While calling the cable company to help resolve the issue may help you may actually be in a situation where a small malfunction requires the simplest fix or troubleshooting.
Chances are your tv tussles have to do with poor picture quality or an insubordinate interface.
If you have cable or satellite try unplugging everything connected to your cable or satellite box.
Wait a minute or two then reconnect.
The sap feature allows your tv vcr or digital cable box to tune in a second track of audio programming.
There is no sound or audio through the speakers when watching television programming.
For other audio related issues use the information listed below.
Are there any hdmi cables or a v jacks red yellow and white cables plugged into your tv.
How to troubleshoot low volume or no sound from the connected speakers of the audio video a v system.
I have spectrum cable.
Only hdmi cable from spectrum box and hdmi cable fire stick.