Hi I have been asking this question more then once but can‘t find a solution. When I turn in my Apple TV 3 and 4 hooked up with HDMI cable to source 2 on my receiver NAD T748’s playing through an HDMI cable to the TV I am getting no sound until I select a different source, an example I have to select source 1 then go back to source 2 again to have sound start up through my speakers. I have tried delays on my Harmony 665, went back to using 3 remotes changed settings in the receiver, tv and Apple TV’s. I have changed to different HDMI cable different source/HDMI slot locations nothing has worked. Please help!