I had a problem with my DUNEHD pro player that just started happening recently... when ever I would choose a movie that was 4k the screen would go blank with no audio. I read a few responses, and tried what they said to do, but nothing worked...except where someone commented about which audio player you were using. I went and switched the audio player to kodi...same problem, but when I switched it back to what I thought it had been on it worked. The working setup uses internal player.
Living room HT
Front channels...3 Klipsch RP160Ms, 4 RP150Ms surrounds,Yamaha CXA5100, 2 Dune HD PRO, 2 Yamaha p2500s, 2 Nobsound 50wpc, UnRaid, APC HT power center, Pioneer bluray player, PS3, XBOX ONE,
Xilica xp4080 crossover