Got an box, installed it with supplied HDMI and updated it.
But setting the menu to 4K makes the AV Receiver turn picture off and On over and over again.
Same with UDH movies with sound the Receiver is unable to display anything the display on the AV receiver just blinks, i can see atmos sound signal goin off and On.
Worked with my Intel NUC also for 4K but no HDR, any idea what is happening ?
Is the device connected directly to the TV? It seems the display is lost.
I’d try playback with the device connected directly to the TV temporarily, and a reboot after you do this.
What happens if you set the video mode to 4K via Settings -> Appearance temporarily. Do you still have a picture?