I have a Roku Premier+ and recently installed a Sony soundbar with my Sony Bravia television. At first installation of the soundbar it would power on and off with the Roku, now it only turns the speaker on, not off. If I turn my speaker off manually and return later, the soundbar will turn back on when the Roku powers on.
Same problem with my Samsung soundbar. Roku will turn on tv and the soundbar will power on via ARC, but will not turn off via ARC when using the Roku remote. Works fine with tv remote. Any suggestions?