TV no sound through internal speakers?

Ho
1

It's not the speakers. The sound is played back as normal by apps such as YouTube, Netflix, etc. What is it

Av

Reset the TV to the factory settings. Before doing this, pull the plug briefly, which is often enough.

If there's only no sound from TV channels, this could also be a defect in the TV tuner, if there's no warranty or manufacturer's guarantee on the TV, buying a receiver is significantly cheaper than repairing it.