Nebula Prizm no sound

Just set up my new Nebula Prizm and it works perfectly except there is no sound. I am playing devices (laptop and DVD player) through HDMI. I also tried iPhone via lightning/USB and when I do this I hear the Apple “clicks” through the speakers, but no playback sound when playing any videos etc.

Any help or suggestions would be greatly appreciated.

By default, on Nebula Prizm the Audio Volume is set to Low / Mute. From the remote, try to increase the volume and try to see if it works.

Also try connecting a speaker to the audio output of the Prizm, to see if audio works.