Help needed! - My recently acquired Pinbot has an issue with the "n" segment (per the manual) in each of the seven display digits on both alphanumeric display panels. The "n" segment does not light up in any of the 7 digits on either panel. So, for example, the letter "R" always displays as "P", no matter which unit of either 7-digit display it is in. Similarly, a "K", "N", "W", or "X" will not display this segment either. Any thoughts as to the cause and how to repair? Thanks in advance to all.