Forum Discussion
This sounds like a hardware issue that needs to be referred to the manufacturer of the set.
Roku TV Manufacturer Support Contacts:
https://community.roku.com/t5/Manufacturer-Support-Warranty-Resources/Contacting-Support-for-Your-Roku-TV/m-p/514423#M6
Other Community topics that you might find helpful:
I clicked the link you provided but I got a message saying I do not have access.
- renojim5 years agoCommunity Streaming Expert
All he does is restart the TV. You can do the same thing by unplugging it for a few seconds and plugging it back it. The other thing he shows is the "clear the cache" routine which also restarts the TV. You can try it: Using the remote, press Home 5 times, Up once, Rewind (<<) twice, and Fast Forward (>>) twice. If you do it correctly you're TV will restart on its own.
I'd be interesting in knowing whether the second method works while just unplugging it didn't.