@Murrayjared81 , also, some videos say this works:
Hit HOME 5 times.
UP once.
REWIND twice.
FAST FORWARD twice. (Clears cache & tv reboots itself. Be patient. It takes 1-2 minutes for the tv to go black, and come back on)
There's some controversy about what that actually does (it's sometimes called "cache clearing." Others call it "restart." It takes longer than the home>settings>system>power menu restart. It's doing something else. And, people have said it fixed problems that the other unplug or restart methods didn't fix. (Like random reboots, or problems with streaming apps kicking out. Like I said, some videos said it fixed the black screen problem).
It wouldn't hurt to try it. Just be patient. It can feel like the tv has froze. (If you have all black screen, not partial black, then you wouldn't see the progress. You'd want to wait 2-3 minutes for the front light to flash and perhaps dim.).
There's also a pinhole factory reset on the back of the tv. I'd unplug the tv, press and hold the power button for a minute to discharge any capicative energy. Hold the pinhole button, then plug in the tv while holding the pinhole button. Continue holding until you see front light flicker or dim after 15-20 seconds(?). Someone said this fixed their famous Roku endless recovery mode when other things didn't. It sounds a little superstitious in the precise way of doing it. But, "when in Rome...."
After that reset, you'll be in the initial setup screen. Tell it you'll connect to internet later. Watch antenna tv, or something connected to HDMI. See if the screen is better that way. (It's possible the full, internet-enabled/updated system causes the problem. It would be useful to to see how it works without going that far.).
If half your screen is dark, my guess is you're going to have to replace something inside the tv. But, it wouldn't hurt to try those things. (If the no-network reset tv works, you could watch streaming through a $22 Firestick Lite connected to HDMI. That's what I'm doing. Also, antenna tv works without internet, but you don't get any guide info. I never used it anyway. I always look at an online guide).
"People are often amazed at how much we’ve done with the number of engineers we’ve got." (Roku CEO Anthony Wood, Austin Statesman, Oct 4, 2019). "Amazed" is one way of putting it.
