There are days in which I simply hate HDMI with its handshaking issues. First thing this morning I turn on my main HT and I get nothing, but a color mosaic appearing on my LG OLED screen. I then started to switch formats from DirecTV, Oppo 203, AppleTV and Roku with the same results. Bad thoughts started entering my pea brain like needing a new display when the clouds started to clear and I started to think about HT-101 troubleshooting. I first unplug the HDMI cables and no improvement. Next, I switch out the cables to some new premium HDMI cables from Monoprice and the problem was solved. After a while I decided to switch back to my old premium HDMI cables that I replaced and guess what? No issues what-so-ever therefore, I decided to watch "The Greatest Showman" again in 4K/UHD and it looked beautiful. Anyway, I don't know what happened over night between my LG OLED and those HDMI cables, but it's cleared up now. By the way, that problem I had with HDMI cables that were directly connected from my Oppo to the OLED and same with the HDMI that feeds from my Yamaha receiver to the OLED.