Found this post after google-ing for Averatec LCD issues. I have the same problem as the Original Poster. After anywhere from 10 seconds to an hour or more of use, the backlight (I am guessing) will die out. You can faintly still see an image on the screen. Did anyone find out if it was the backlight, or inverter, or a heat issue?

I am about to just remove the whole LCD screen upper half and turn this into a home only mini PC using an external monitor...

Thanks in advance for any tips.