I had a Roku 3 for many years. It was a fantastic product. I used it for 4 years without issues. Then, some months ago, I decided to upgrade to a Roku Ultra. This was a mistake. On the very first day, the screen would go blank for around 1 to 2 seconds, 1 to 2 times per hour. I never had this problem with the Roku 3. Not once.
The obvious thing to do is to call Roku support, which I did. Despite the fact that I never had any problem with the Roku 3, they tried to convince me that there must be a problem with my HDMI cable. So, I bought a new one. Screen was still blanking. Then they tried to convince me that there was something wrong with my TV, which I knew was ridiculous. Then, they thought that there my be something wrong with my specific unit, so they sent me a replacement, which still had the blanking problem.
I stayed on top of my tickets with Roku support, and had to continually push to get status updates about my tickets. Multiple times, after escalations, multiple people at Roku support promised to follow up with me, and never did! I was going out of my way to try to help them solve the problem, which was obviously the operating system. Perhaps there is just a bug in their OS that does not like my TV. I have no idea. But, I offered on multiple occasions to help them try and debug the problem. They promised to follow up with me more times, and never did.
After the many failed promises to follow up with me, that were never fulfilled, and with waiting for status updates, the time period in which I could get a refund from Best Buy lapsed. I honestly believed that Roku would want to find out why their device was intermittently ceasing to send a signal to my TV. I thought that Roku would care enough about customers to follow up when they promised to do so. But, none of these turned out to be the case. Instead, what I got was the cold shoulder from Roku, despite being a loyal customer and trying to help. And despite it being their fault that I was not able to return the device, due to waiting on their follow ups, they refused to issue me a refund.
Long story short, I bought another device from a competitor. And guess what ... IT NEVER ONCE MADE MY SCREEN GO BLANK. It works just fine with my TV and HDMI cable.
So long Roku! I enjoyed the Roku 3, but your current OS simply does not work well, and you did nothing to try to give me a device that I could actually use. You cost me more than $100 for a device that does not work and refused to refund my money.