I am trying return to service a 58503A with option 001 display. The motherboard is physically damaged beyond repair. I have two identical motherboards, with id and update info, exactly the same as the original board. However, neither will support the 001 optional display. Apparently, I need to update the firmware in the motherboard. Evidently, this requires an upgrade disk that is no longer available. It is listed as "58503A firmware upgrade disk -- 58503-13402" in the option 001 manual. If anyone can help me find a copy of this disk, or the upgrade file, please contact me by direct email or telephone.
73 de Lon, K5JV [email protected] 281-795-1335 [c0a68fe8-c7fc-45a2-992b-a68133c08521] _______________________________________________ time-nuts mailing list -- [email protected] -- To unsubscribe send an email to [email protected] To unsubscribe, go to and follow the instructions there.
