I have roku 2XD version 6.2 build 3468. I have been experiencing blackout every once and a while sometimes it is very often and other times sparsely. It blacks out for a second on every channel, amazon, netflix and hulu. What could cause this? I replaced my HDMI cables with new ones and it did not make a difference.
It might be worth trying a different HDMI port on your TV.
There are generally three things that can be a problem. And, it could be more than one, though likely it's just a single one. The three possible problem areas are the TV input, the cable, and the Roku output.
The Roku 2 XD is an old box. It was discontinued 22 months ago. It could be going bad.
If you have another TV, try it. If you have another port on your TV, try it. And, if you have a third HDMI cable (maybe borrowing from another device) try it. If not combinations of HDMI inputs, TVs, or cables resolve it, it could very well be the Roku.