As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: EMERGENCY LIGHTS ENTIRELY INOPERATIVE ON BUSINESS CLASS ROWS ON EMERGENCY LIGHT TEST. FOUND M1675 POWER SUPPLY BAD, CUASING MULTIPLE LIGHTS TO BE INOPERATIVE. REMOVED AND REPLACED M1675 POWER SUPPLY. PER AMM 33-51-06. OPS CHECKS GOOD. ALL EMERGENCY LIGHTS IN CABIN WORKING NORMAL.