Hello, I' new to this thread. I have a Samsung HW-N950, with my Roku Ultra plugged to the soundbar HDMI in and from Soundbar ARC HDMI out connected to my LG UHD TV (LG 43UJ634V) ARC HDMI port. My issues is if i keep my roku display setting to 4K 30Hz no issues, however, if I set to either 4K 60Hz or 4k HDR 30 Hz my TV screen gets black screen constantly but the audio is working.
If I plug the Roku device directly to TV, TV display works fine with all the resolution.
Any clue what is wrong?
Thanks for your support.