Sound. New on roku tv 43 in. Why is it that the volume quits going up at 50.. I can go all the way to 100 but nothing changes after I hit 50. Its aggravating all the around. But when I flip on music. I'd like to hear it in another room. I added a sound bar. And it doesnt yet any louder than the tv. 50. This seems to point to a sound lock on these tvs..and nothing to do at all with programming.