Change the batteries in your firestick remote control thats what I did ... View more

It might be a long shot but the reason my sound kept going up was because the batteries in the amazon firestick needed changing. It seems that if you have a firestick it kind of takes over your tv, so give it a try it might be that. Andy ... View more

Glad I could help. ... View more

Hi Might be a long shot but it was the batteries in my firestick remote control that caused my problem  ... View more

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.   ... View more