While watching Netflix, my Roku suddenly went black and then began flickering the Roku logo and black screening. Now even if trying to turn the TV off, it will still do the blackscreen/flicker the Roku logo. I've tried the factory reset button, unplugging the TV from the wall outlet and waiting, and the remote restart buttons (clicking the home button 5 times etc.) and nothing is fixing the tv. The TV has been plugged in to the same wall outlet with a surge protector for 2 years now without an issues. I've gone through the manual for the TV without more ideas. This is not a smart tv so there aren't updates to check for. I'm at a loss on what I can do to fix the issue.
Extra info for reference;
Model #: 65R7G5
Serial #: 65G2142AAH00561