"I have a 42" scepter tv. I'm having trouble starting it. The blue light comes on and a few seconds later it goes out. I unplug it and plug it in and nothing. After awhile of plugging it in & out, Finally the red light will finally go on. Then I turn it on and the same thing over again. I installed a new power supply board, but still the same thing. What in the heck do I do?