So my TV is playing through the soundbar and the TV when playing through the TV speaker. However when only on optical output it's ok. The problem is the TV sound toggles up to 100 and even when you toggle down it goes up on it's own ( very loud) the audio out icon is staying on the TV and wont go off and the red sensor light is flickering all the time. Changed batteries in remote and switched TV off and unplugged for a few minutes. Any ideas the model number is ue55mu6120 serial no. Ob523shja03399h.