So I bought a new tv for my mom and after connecting to her receiver I noticed that sometimes the sound comes on but no video, eventually the video shows up after waiting for a minute or so but turning the tv and receiver off and on again usually works and both video and sound turn on at the same time. The other thing is, when using the app on her tv to watch Netflix or Prime the sound does not go through the receiver and speakers only through the built in tv speakers. But when watching through the Shaw app it works fine. The Tv is a Sony, receiver is an older Pioneer. Tv and cable box connected via hdmi, speakers via banana plugs to the receiver not sure if that matters. Also, the Sony manual said to connect to the ARC input of the receiver and it is currently plugged in that way but doesn’t seem to make a difference. Thoughts?