Check and see if you have two settings in the advanced system settings menu. See if framerate matching is turned on, and try it turned off. Also, if the color space (going from memory, might be labeled something else) is set to 4:2:2, change it to 4:2:0, or vice versa.
color spacing- that was it. framerate was already disabled, but changing the color spacing to the other value worked. Thank you Dan.....I've been trying to correct this issue for two weeks!
Unfortunately I have joined the club of screen flickering on and off suddenly today. I have read many of the responses by the ROKU team and have tried them all, to no avail. I have had trouble with my streaming stick + off and on since I first got it. I believe it to be defective. How do I go about getting it exchanged for a new one?
A few thoughts here:
Keep us posted with how it goes from there!
Had major flickering, audio gaps and even vertical color bars making it impossible to watch - I read all the solution + Started by going to Roku Setting and Changing it from 1180p?? to 720 pp - Not only did all of the issues disappear, but thin white/clear lines that have been at top of screen forever disappeared. The Roku is no streaming perfectly - the picture is better than ever.
Note: I have a older Roku- I think Roku 3- which is plugged into to an older toshiba Tube TV - and has been WORKING PERFECTLY with Roku for years - The Roku is plugged into an HMDI adaptor with the wire with yellow, white plugs inserted in the adaptor at one end and the TV at the other.
This set up has been working great with Roku for years - with the change to 720 the picture is better than ever.
I thought this was an odd ball problem that had to do with the adaptor and tube TV - so I never thought I'd find a solution by Googling - but after TWO WEEKS OF SUFFERING - I found your comments - AND IT WAS LITERALLY A 1-MINTUE FIX!
Thank everyone for taking the time to post!
My Roku player suddenly shows green horizontal flickering bars when I try to stream in Netflix or Amazon. I've restarted and rebooted the player several times and the problem persists. What do I do?
You need to save yourself some time and make a habit of reviewing what others have found to solve this issue: Here's a post that solved my flickering issue 3 weeks ago----
Check and see if you have two settings in the advanced system settings menu. See if framerate matching is turned on, and try it turned off. Also, if the color space (going from memory, might be labeled something else) is set to 4:2:2, change it to 4:2:0, or vice versa."
Thank "Dan" for that old post.
I have a brand new (OK almost 2 week old) 2019 version Roku Express hooked up to a basic 720p capable TV in our bedroom. It was working fine until suddenly last night it started this dreaded on for 1-2 seconds and then off for 1-2 seconds junk over and over. The TV and the Roku stay powered on, but the display goes off and on.
I did a full factory reset of both the Roku and the TV and no luck. I tried other sources and they are fine, I tried other HDMI ports, and another HDMI cable (both cables tried were the new ones included with the Roku (We actually bought 3 new Rokus. Two 2019 Express models and one 2018 Express Plus to connect to an older TV in the bathroom without HDMI).
I don't see any options for color space on the TV or the Roku Express, but then again, it is hard to navigate the menus when they are not displaying off and on.
One note, on rebooting of the Roku, with the little Roku animation, everything is fine. It is when it hits the main menu (Home) that this starts.
Another note. After the factory reset, it doesn't display this behavior at all until you get the wifi connected. As soon as you put in the wifi password and it starts trying to connect, it starts the on/off stupidity again.
I've tried 720p, 1080p, and auto and they all do the same.
Current box on this TV has been kept up to date automatically, but I did check again after the factory reset.
I haven't opened the other Roku Express yet as it is slated for a TV that I just haven't gotten to,
UPDATE: I pulled a high quality HDMI cable from a different room and the same thing happens.
@NickBuol Did you try replacing the HDMI cable connecting your Roku Express to your TV, swapping the ends of the HDMI cable, or connecting it to a different HDMI port on the TV? What make and model is the TV that you have the Roku Express connected to?