As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE TRYING TO COMPLETE OPERATIONAL TEST OF THE EMERGENCY LIGHTING SYSTEM TASK CARD 335003 LIGHTS 32LN AND 33LN WOULD NOT ILLUMINATE. MAINTENANCE REMOVED AND REPLACED POWER SUPPLY 21LN, P/N 3301-51, SN/OFF 2180, SN/ON 2206 IAW SF340 AMM 33-50-10.