The radio module is shutting down after 3 minutes because the i-bus is polling the nav drive and not getting a response. After 3 minutes it assumes it does not exist and terminates communication with the radio and nav modules.

Sorry, but I don't know anyone that repairs MkIII units. Perhaps other members can lend some assistance.

__________________

Xoutpost.com - where you come for the information but stay for the friendships