I've been having Roku Ultra blanking problems for a year. I've tried ever possible permutation of settings with no improvement. I also purchased 18Gb/sec HDMC2.2 certified cables from three vendors and used them. No improvement. Today, I finally solved the problem, but it took a$120.00 investment in...

This blanking issue recurs randomly. The period of blackness can last from 3 -15 seconds and can occur once an hour or once every 3 minutes, and anywhere in between. My Internet connection is 150 MB/sec and I use a cat 6+ Ethernet cable connection. My TV is a Samsung JS8500, and the blanking occurs ...