As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY EXIT LIGHTS WILL NOT STAY ILLUMINATED. REMOVED AND REPLACED M1669 POWER SUPPLY AND BATTERY PACK AT STA 603 WL 212 RBL 67 AND REMOVED AND REPLACED M1673 BATTERY PACK AT STA 952 WL 290 LBL 13; PERFORMED GOOD INSTALLATION TEST OF M1669 AND M1673 AS PER AMM TASK 33-51-06-960-805 AND TAKS 33-51-06-960-806.