At times I like to watch TV w/o having my pre/pro on, for example watching news or old sitcoms.
I have a four year old Plasma w/o ARC (auto return channel). I have my cable box HDMI routed to pre pro and HDMI out to TV. I have HDMI pass through function set on pre pro, (yellow light is illuminated) in standby mode. When TV is on, I get video and no audio. Is this the way it functions when TV has no ARC? I also connected an optical cable from back of TV to pre pro as instructions say for non ARC TV's.