I just completed my first board! When I power the board up, it displays the welcome message, but the center LED segment doesn't work. I swapped the LED with the one to the left and have the same issue. Everything else works so far. When I enter test mode, the left and right LED segments display and then the 16 LEDs on the board count up. I can set the channel number, but can't see the second digit. I checked the solder connections of the socket and the adjacent chip and I don't see anything wrong, but given my soldering skills, this is most likely where I made the mistake. Any ideas? (I can't wait to start board number two now that I know what to do.)