What was found
LT AND RT OVER WING EXTERIOR EMERGENCY LIGHTS INOPERATIVE. EMERGENCY LIGHT BATTERY CRADLE NR 4 FOUND AT FAULT. R&R EMERGENCY LIGHT POWER SUPPLY CHARGER. OPS CHECK FAILED. T/S BLOWN FUSE IN NR 4 BATTERY POWER SUPPLY. REMOVED LIGHT BULBS AND CHECK FOR SHORTS AND OPENS AT P803 AND P8532. NO DEFECTS NOTED. RESTORED BULBS AND PLUGS, ALL WIRING FOR AIRCRAFT BATTERY SUPPLY NR 4 CHECKS GOOD. SLAVED A NEW EMERGENCY LIGHT INVERTER IN NR 6. OPS CHECK FAILED. T/S OVER WING EXTERNAL EMERGENCY LIGHT CONNECTOR AND FOUND 0 VOLTAGE. R&R BATTER POWER SUPPLY NR 4. OPS CHECK SAT. POWER SUPPLY REMOVED PN BA5-0933-901 SN C03022. PN INSTALLED 11-049 SN 23852 (PART FAILED - REMOVED) PN 100865 SN ID11151 INSTALLED.