I have a Panasonic OLED 65FZ950U. The HDMI cable from the beam is plugged into the ARC port on the TV. Sometimes when I turn the TV on, no sound comes from the beam. I check the TV sound setting and its set to TV, I change it to Home Cinema and a message pops up Invalid operation. I then unplug the HDMI cable from the beam, plug it back in and after a few seconds I get sound from the beam. TV HDMI input setting is set to digital. Not sure if this is a TV or Beam issue.