Playback Issues - Audio/Video & Power

Help with audio & video playback issues, TV display type recognition & compatibility, HDCP messages, troubleshooting playback errors, advertisements, and resolving power issues.
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Level 7

Roku Express - display is blocky and glitchy

I have seen other posts that are kind of like my issue, but not the same and none of the solutions offered have fixed the issue.

Having said that, here's what's going on:

  • Roku Express connected to TV over HDMI and has worked for months, just fine (until about 3 weeks ago)
  • When powering on, the Roku splash screen during boot display just fine, no issue
  • The Roku main menu loads just fine... INITIALLY... all app tiles look ok... AT FIRST
  • Once I got into an app (eg. Netflix) it loads but I begin to notice the display becoming blocky and as it continues to load the 'blockiness' shifts slightly (that's what i'm referring to when i say glitching)


Here's what I have tried:

  • shutdown and left power unplugged for a few days
  • rebooted Roku
  • switched to a different HDMI port on the TV
  • changed out the HDMI cable to a known good cable
  • installed all available Roku system updates (up to date as of 11/21/19)


What I have not tried, but plan to:

  • connect Roku to an entirely different TV to see if problem persists

we have multiple gaming systems connected to the same TV and none of them have any display issues, so I did not believe it was the TV... I'm just out of things to try as far as my own knowledge goes.


Any ideas would be GREATLY appreciated!


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