I have an SC-XH170 Panasonic Home theater and i have it plugged into my Panasonic GT50 via HDMI 2( ARC) the HDMI cable is from amazon 1.4 ethernet btw. My friend gave me this system because he was moving into a smaller apartment and didn't want it anymore. He lost the remote but some how i can control with my Viera TV remote. It's called Viera Link anyway on HDMI 2 and select ARC, the as soon as i go to HDMI 1 or 3 to play my xbox or Apple TV it switches to AUX -.- can anyone help me please. i dont have the remote but my tv's remote seems to control it as well. i get the home theater volume bar and all but no sound Radio sound works great.