How to get Samsung 4K smart TVs playing through LG 3D home Theater Play in 5.1?
You have to check the connection mode between your TV and the Home Theater. I've visited the LG website and it appears that the LG device supports HDMI 1.4 version which means you will need one of this cable in order to connect them. There is no need to attempt playback on the SMART TV for the native content.
For additional manuals and statistics, use the following link: http://www.lg.com/ae/home-theatre-systems/lg-BH6730T