Question No sound from soundbar

[Thira]

I have an older Pioneer 65 in plasma tv which I moved from my media room to my bedroom. The TV and sound from the soundbar work fine when using direct tv.
I just added afire tv stick th HDMI input six, and ran an optical cable from the tv to the soundbar. However I get a picture fine but no sound.

Any suggestions would be much appreciated.

Thanks in advance

 

[JayCee]

Go into the Firestick settings menu and set the sound output to PCM.

 

[Thira]

Thanks. PCM not an option

 

[JayCee]

Go into the Firestick Home Screen (Pressing the Home button on the Remote), enter into Settings, select the Dolby Digital Output option and make sure that Dolby Digital Plus is set to off.