My rca roku 4k tv has been flickering. Image is still present but it will flicker lines vertically across screen. We have tried on/off, factory reset and still running in to the same issue. I've only had the TV for a year and it hasn't sustained any damage nor surges or anything why all of a sudden now
Thanks for reaching out regarding the issue you are experiencing.
We recommend restarting your Roku TV, Go to Settings > System > Power > System restart > Restart and unplug your TV for 10-15 minutes then plug it back in to resolve the issue. If the issue still persists, we would recommend you contact the TV manufacturer for the issue. Each Roku TV manufacturer provides direct support for their products running the Roku OS.