I have a Denon 1613 that has suddenly stopped playing bluerays in surround sound. Only stereo. PS4 and Directv are fine. I have a LG blueray player and PS4 and they both will not play blueray in surround. No Dolby or DTS. PS4 games are fine but Blueray on PS4 only give me the stereo option. I am sure that I am missing something but can't figure it out. Any suggestions?