I just purchased a Brand New Sony Bravia 55 Inch 4K (X900E) TV and a Samsung HW-M550 Soundbar and the problem i am having is the Soundbar only works when my Xbox One X is turned on when i turn off my Xbox the soundbar shuts off and it goes directly to my TV Speakers Audio. I have the Soundbar connected via HDMI 3 ARC and My Xbox one X is connected via HDMI 2 i also have a tv HD box thats connected via HDMI 4. Its a really strange problem i went it my tv settings and they all seem to be properly configured for the Sound, I also tried connecting it via optical and same problem. the Xbox is using a separate HDMI port on the tv so im not sure how it even sure why it would effect the soundbar. If anyone could help me with this issue would greatly be appreciated