I got this TV a few years back and like many people I had the issue with the four capacitors. After fixing that, it worked great for a few months then this issue came up. If the tv is plugged in it automatically turns on and stay on until I unplug it. Really that wouldn't be a huge deal but it only displays a black screen. I can see white light being generated through the vents on top, but the screen doesn't seem to want to generate anything other than black. The power issue leads me to believe it has something to do with the power supply board. What do you think it could be?