I too am having same issues with intermittent dropping off of the sound volume. I am using a new LG OLED 55B6V TV with Orbitsound A70 soundbar. Both (top of range?) items newly purchased. Connecting using recommended optical cable. The sound seems to drops randomly for a few seconds and then recovers to the correct volume level. Orbitsound support tell me the issue is with the LG TV? Not sure where the issue is but it would appreciate LG helping to resolve with the Soundbar suppliers.