


I looked closer at my TV settings and noticed something.my TV has different picture mode options for each HDMI connection (Dynamic, Standard, Natural, and Movie) I mostly use Dynamic because it gives me more control over how I want the image to look with brightness/contrast settings etc. The Roku doesn't turn off or anything, and I can still hear the sound of the Roku while the screen is black.so after finding no help online, I decided to do an experiment. I have my new Roku Express plugged into my 42 inch Samsung Smart TV (using all the stock cables and accessories that came with the Roku Express), a few minutes after setup I noticed the screen would flash black every 20 seconds or so, regardless of whatever the Roku was doing, the display would simply black out for a few seconds, then turn back on. I got on here and no one seems to know the cause of it, not even the Roku staff, so this must mean it's a TV problem.and I think it is. I've used a few Roku devices over the years and never had this "flashing black screen" problem.until last night.

Alright, so I got my 2nd Roku Express last night for my bedroom (my 1st one is in my living room).
