What was found
AIRCRAFT WAS NOT GROUNDED. AIRPLANE HEALTH MONITORING ALERT RECEIVED FOR CLASS 31 REMOTE WIRELESS EMERGENCY LIGHT SYSTEM CONTROL UNIT LAMP DRIVER POWER CIRCUIT FAILURE, FAULT CODE 33-11931. REMOVED AND REPLACED OVERHEAD FLIGHT ATTENDANT REST WELS REMOTE CONTROL UNIT AT M3351033 PER AMM DMC-B787-A-33-50-F1-VOA-421A-A. ACCOMPLISHED ACTIVATION OF EMERGENCY LIGHT SYSTEM POWER PER AMM 33-51-00-04A-730B. OPERATIONAL CHECK GOOD.