Good evening everyone. I have a problem and I would like to listen to suggestions for the possible solution of the TV. I have a 32-inch LG TV, led, model 32LB551A, it started to turn off sometimes and stopped turning on, it took To a technician and checked the LED strips and some presented problems, all the LED strips were replaced by new ones, the TV was tested before closing, the TV was turned on, all perfect, when it was covered and then when turning it on again there was audio but there was no image, just the green screen and then it turned white. Please what could it be? I would like to hear any suggestions or possible solutions?

Thank you. It will be tested.