tv powers on video 1-2-3 work hd-rgb inputs when hooked up picture is scrambled and power off after 30 seconds get 3 green and 1 red flash on led power lite power down and turns back on for another 20-30 seconds but works on video 1-2-3 when you first power on on video inputs picture has some scrambling in it for about a minute then all is good and doesnt power off any suggestions please