RCA RT2380BK home theatre system I can't get my speakers to work to it. I am trying to hook my ps4 to them through a optical out cable but when I switch it them on the tv and PlayStation but no sound?

Make sure your RCA RT2380BK home theatre system is set to the correct input for the optical cable. Check that the optical cable is securely connected to both the PS4 and the home theatre system. Also, ensure that the audio settings on your PS4 are configured to output sound via the optical cable. Finally, verify that the volume on the home theatre system is turned up and not muted.