Hello list. It's a shot in the dark, I know, but I thought I would ask here anyway. Does anyone know of a source for the manual for this? It is very similar to the 9390-52054 in most respects, and that manual is commonly available on the Web. The -55114 is different enough to make me want the correct manual so that I don't have to reverse-engineer the board layout to fix mine. Mine really, really wants to work, but seems to have a problem in the vicinity of U7 / U22 / U23; everything else seems to be in working order. Best regards Mahlon - N4ZK