As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IMMEDIATELY FOLLOWING REFUELING, THE PILOT TURNED ON THE ACFT BATTERY & THE PILOT'S MAIN DISPLAY UNIT DID NOT COME ON. SHUTDOWN POWER & INITIATED THE SEQUENCE AGAIN AFTER WAITING 1 MINUTE WITH THE SAME RESULT. HE THEN SHUT DOWN POWER & CALL MX. MX ARRIVED TO TROUBLESHOOT THE PROBLEM. DETERMINED TO BE A BAD DISPLAY UNIT. THE SYS WAS DEFERRED, CAT A - ONE TIME FLIGHT TO MX. THIS ACFT CURRENTLY REMAINS OOS AT THE TIME OF THIS SUBMISSION AWAITING A SERVICEABLE DISPLAY UNIT.