I finally finished installing the Rambo board. It worked. While going through the menu system a few times and after about 1 hour, the Rambo stopped working. All I get is a blank screen. No information. The screen is on, but no menu. I am disappointed that the board would stop working during normal use. I did not even get to print anything yet. I checked all three fuses. I get 12 volts at all three fuses. Cables have continuity. What do I do now?