Hello all. Been wandering the internet amilessly the last 3-4 days untill i found this site. I have some problems with my vizios. M420SV it turns on, the screen gets lighter, then darker, then lighter again thats it. I was going to replace the main board but hard to find. My E3D470VX has a green vertical line on the far right of the screen. No idea about that read about t-cons and invertor back light boards but when i opened it i could only see the main and power. Not digging far enough or missing something? I have checked the caps none are blown from what i can tell. Any help would be appric...