My Yamaha yas-207 was connected successfully to my Samsung tv. We have the optical cable connected to both and power out of the bar. It worked before our housekeeper came and then doesn’t now. It has power and we don’t see any hdmi that is unplugged. We don’t remember if it was only connected to the tv by optical cable to begin with? Just not sure what is wrong. It looks and reacts normally. Just no sound.