I have a Sony tv NSX40GT1 and a new Panasonic Home theater system SC XH105. Both show they are ARC and they are connected with high speed HDMI cable. I cannot get the sound from the TV to play thru the home theater system. I can play DVD thru home theater system and vidoe plays on tv. I have followed all the set up steps I can, but cannot find out if the tv system setting on the home theater is NTSC, PAL, PAL60 or AUTO. In addition, there are 5 HDMI receptacles on the tv and none are marked ARC. Sony info says tv is ARC compatable. please help me get sound from tv to home theater.