I just picked up a Denon 4310ci used but in excellent condition. This unit will be replacing my Pioneer SC 35 that has some issues like subwoofer output not working and some switching issues. It’s a shame because I really loved that SC 35 AVR.\n\nI am not ready to upgrade yet till I find my dream unit which is probably going to be a Marantz.\n\nSo this will be a temporary unit to hold me.\n\nI hooked this unit up via HDMI to my Verizon Fios set up box and a Samsung smart tv with ARC HDMI.\n\nI am not getting and sound when using smart tv apps. \n\nFios set top box works perfectly. What am I doing wrong?