(I’m French, so forgive me if I make some mistakes)
When I finished to assemble my makerbuino (which is, by the way, an amazing idea !!!), it worked. I played with it during a long time and everything was fine. But the next day when I wanted to turn on, the screen displayed nothing, there were only the backlight and the sound. I tried to reset (with button C) but no changes. I checked my solder but I’m not an expert so I’m not sure. Can you help me ?