I just came back from vacation today and received your kit in the mail. Look, when I say ‘check the solder joints’, that’s exactly what I mean: check the solder joints! I flipped the PCB and immediately noticed that one pin of the LCD female header is not soldered at all (the 5th pin from the right). If you don’t believe me, here is a snapshot of your PCB before I did anything to it. After soldering that pin, and replacing the Ethernet jack (yours had a broken pin), everything is working fine now. I will send it back to you on Monday. The good thing is that your soldering quality is overall pretty good, unfortunately that one unsoldered pin took much of your and also my time.