Sony Bravia tv’s model KDL-40R550C and KDL-48R550C and W650D series have the ability to output different audio signals via their optical digital audio out port. Some soundbars cannot decode those sounds.
This video will show you how to change the digital audio out output to PCM a more universal sound type supported by more devices.
If this does not work check if you have a RED LIGHT coming out of your TV”S OPTICAL OUT port on the tv.
If there is no red light the tv will need to be FACTORY RESET.
To FACTORY RESET the tv. While the tv is ON:
1) Hold down the UP arrow on the sony tv remote and keep holding it down do not let it go.
2) now that the UP arrow on the sony tv remote is being pressed you can then press and let go of the POWER BUTTON that is PHYSICALLY on the TV itself (NOT THE POWER BUTTON ON THE REMOTE.)
3) Reset should appear and the tv will turn off and turn back on and ask you to do the initial set up.
Instructions can be found here: But remember when it says to press the POWER BUTTON it is in the one PHYSICALLY ON THE TV and NOT the remote.
Factory Reset Instructions:
After the Reset the Optical Out Light should come back on in red.