As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - CREW REPORTED DURING CLIMBOUT LOST ALL INFO ON NAVIGATION DISPLAY. FLIGHT RETURNED DFW LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED NUMBER 1 COMPASS RACK CONNECTOR THAT WAS BAD. SYSTEM GROUND CHECK NORMAL OPERATION.