What was found
FORWARD 3 EMERGENCY LIGHTS WILL NOT TURN OFF AFTER SHUTTING OFF THE POWER. REMOVED FROM SERVICE. EMERGENCY LIGHTS IN A DISCHARGED STATE ON ARRIVAL. PERFORMED EMERGENCY LIGHT POWER UNIT CHARGE PER AMM 33-50-01-800-801-A. POWER UNIT FAILED TO CHARGE. OPS TEST FAILED. FOUND FAULT CODE 33500002UT1. REMOVAL PF LH FWD ELPU PER AMM 33-50-01-000-801-A SUBTASK 33-50-01-01-002-A REMOVED PNL 227BLC. REMOVED POWER UNIT AND BATTERY PER AMM 33-50-01-000-801-A & 33-50-01-000-802-A. INSTALLED NEW UNIT AND BATTERY PER AMM 33-50-01-400-801-A & 33-50-01-400-802-A. REMOVED PANEL RE INSTALLED, OPS TESTS GOOD. A/C OK FOR CONTINUED SERVICE. RETURNED TO SERVICE.