Why did my screen display colorful lines and then go black?
My television displayed colorful vertical lines and then went black. The power light will light up and then fade out and then a few minutes later do it again and repeat. There is no sound and I checked the screen with a flashlight to see if there was anything showing on the display and there is not. I have model number: P502ui-B1E, it is a 50” P series. I am trying to determine whether it is worth replacing parts or just throwing out.
"@ajk1 this “The power light will light up and then fade out and then a few minutes later do it again” could be because your TV does not pass its self test. The error you describe sounds like either a bad main board or a bad T-con board.
VIZIO is a company that does not support DIY repair or no service manuals are readily available.Also, they are insconsitsne t with parts and quality and in general use a hodge podge of parts to make things work. At this time you are more looking onto replacing boards without having the ability to test them ahead of time.
I would try and get a few replacement boards like t-con or main board from a place that is inexpensive and has a decent return policy. That way you can return the boards if there is no change. Those are not bad TV’s just not the best quality and it would be a shame to just dump it in the landfill because of a failed board…."