My Roku TCL tv is 40inch it has red colour in the top corners and will turn itself off an on. I tried restarting it. I tired different plug outlet. I tried factory reset and even updating. I also removed all apps I've had on the TV for about two years. I was wondering what could be wrong with it?
Have you tried contacting the TV manufacturer to inquire further? I'd suggest starting there to see what options or suggestions they can provide. Each Roku TV manufacturer provides direct support and warranty services for their products running the Roku OS.