I am a first-time pinball owner working on my Embryon machine. The machine is in good shape overall, with a small handful of little bugs to work out functionally. The current issue I am troubleshooting is a light bulb that won't come on (the "Top Center Lane Arrow" on the playfield). I tired a new bulb, no luck. I thought maybe it was a bad socket, but I swapped a new one in there and the issue persists. I traced the wire back to the auxiliary lamp board, where the connection seems good. There is continuity between the connector pin and the pin on the board. The related transistor and resistor both seem fine, though that is as far back as I've traced it. Any other thoughts on what is best to check next? I have not checked the continuity of the wire from socket to connector plug, but I will confirm that tomorrow, in case there is a break in the wore somewhere. I can post images later if that helps. Cheers!