As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MIA - CREW REPORTED LEFT FUEL QUANTITY BLANKED OUT. EMERGENCY DECLARED FLIGHT RETURNED MIA LANDED WITHOUT INCIDENT. PLACARD TOTAL FUEL QUANTITY INDICATOR INOPERATIVE PER MEL 28-13A. FLIGHT CONTINUED TO DESTINATION. REPLACED LEFT MAIN TANK UNIT NUMBER 1 TO TANK UNIT NUMBER 12 AT LAX ON 01/06/2013. SYSTEM GROUND CHECK NORMAL OPERATION.