My Roku 43inch 4K tv starts with black screen.

My screen goes black every morning; it has been like this for the last couple of weeks, not sure what's going on? I can power it on and hear the audio but only a black screen. I power back off then on, then I'll see a very faint picture of my apps through the blackness so, I'll power off again power back on; again a blank screen audio is fine I do this about 4 or five times and then eventually it will come on and okay great throughout the rest of the day.I've did a system update, unplug the TV, the outlet is for the TV by itself no other things are plugged in. The customer service rep had me too do a system restart and hopefully after the system restart it will help getting my picture back like it used to be this TV is not that old to be having these problems already. Won't know until tomorrow if that helps.