I've had a Vizio 42" LCD for about 2 years. It was manufactured in '09. Several months ago i noticed a buzzing sound. Then a few weeks after that, it shut down. I can turn the tv on but it buzzez in the top left corner and when I remove the shell I notice the backlight is flickering. After about 30 seconds it shuts off completely. If I wait about 2 minutes, I can turn it back on. Same thing happens. Just a blue screen, buzzing, and then shuts off again. I apologize for my ignorance when it comes to electronics as I have no idea! However, I am pretty handy and I feel with a little guidance...