Hi there. We've had this 70inch TV for about a year now so still fairly new. 1st month we had it we was loosing sounds but I put it down to being overly heated. The problem progressed to just presenting with a black screen and all sound. Now it turns self on and off with a flashing/blinking black screen. I've tried all sorts to reset and wondered if anyone out there knew of a simple way to resolve as I cannot find proof of purchase 🙃
