As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING STANDBY POWER CHECK, EMEGENCY LIGHT OVER MAIN ENTRY DOOR INOPERATIVE. LIGHT UNIT WAS NOT INSTALLED FULLY. RESEATED ASSY, NO HELP. REPLACED LIGHT BULBS AND LIGHTS ILLUMINATED FOR A SPLIT SECOND AND DIED. R & R L1 DOOR EMERGENCY LIGHT ASSY IAW MM. OPS CK NORMAL IAW CH 33.