Re: Vizio E421VA - no picture

mines had no backlight ,and like a buzzing sound comming from main board , no picture on screen , no sound, good voltages

#solution to my problem
hdmi ic or u501 ,72 pin ic
silicon image ic

i took it off smd removal and it turned right on good backlights too image on screen.

you can either replace the mainboard with an identical board or replaced the bad ic . im replacing the ic