Press the 'menu' button on your Vizio remote. Navigate to and select the 'System' option, using your remote. Navigate to and select the 'Reset & Admin' option. Select 'OK'. Put the parental code, if you have manually put one. If you have not manually put any parental code then put '0000' as the password when asked for.
Reset the TV's Sound. Samsung smart TVs allow you to reset the device's sound separately from the rest of the system. This can sometimes fix problems like stuck volume controls. To do this, go to Settings -> Sound -> Expert Settings -> Reset Sound. The process shouldn't take long.
Make sure it is set to TV Speaker. That will ensure you have at least some speakers connected. Try again and see if you get sound. If yes, you're done. If no, there may be more than one volume setting to check: Check the volume setting on your cable box. Step 1: Make sure to turn on the TV and the set-top box. Step 2: Press and hold the OK button and the FIOS TV button simultaneously for 5 seconds and release them. The LED light on the top of the remote will flash a red light twice and become static. If this has not happened, try again. Here's how to fix the common problem that Samsung smart TVs have with the sound volume. I hope it helps. klJS.