Hi, my Roku TV screen goes black with sound. I have to turn TV off to get picture back. This happens about two to four times a day. I unplugged the TV over night and it did not work (it would be fine for about a week). I did a factory reset and it did not work. I purchased the TV a couple of months ago and it started two weeks after the setup. I also purchased two other Roku TVs and they work fine.
