I have an insignia soundbar and I have connected with the optical cord from the cable box to the soundbar and I have no sound

[Marlene_6]

No sound from my insignia soundbar bar

 

[americanaudiophile]

Check the set up menu on the cable box. You may have to turn the optical output on and the audio via HDMI off.
Call your cable provider and they should be able to help you.