What was found
AISLE EMERGENCY OVERHEAD AFT LIGHT LAMP INOPERATIVE. REMOVED BATTER POWER SUPPLY NR 1, 2, 3, AND 4. PERFORMED CONTINUITY TEST OF FUSES ON NR 3 EMERGENCY LIGHT BATTERY CHARGER. FUSE F3 FAILED. R & R CHARGER. OPERATIONS CHECK FAIL. LT EXIT IDENTIFIER LIGHT AND RT OVER WING EXIT SHROUD LIGHTS NOW ILLUMINATE, BUT IMMEDIATELY DIM AND GO OUT. R & R EMERGENCY LIGHT BATTERIES 1, 2, AND 3. OPERATIONS CHECK FAIL. TESTED VOLTAGE OF ALL BATTERIES. VOLT CHECK SATISFACTORY ON ALL. R & R CABIN LIGHT CONTROL MODULE. OPERATIONS CHECK FAIL. ALL LIGHTS NOW COME ON AND THEN IMMEDIATELY DIM AND GO OUT. R & R NR 5 INVERTER ASSEMBLY. AFT AISLE EMERGENCY OVERHEAD LIGHT TURNED ON. OPERATIONS CHECK SAT. A FEW SECONDS AFTER TURNING ON EMERGENCY LIGHTS THEY START TO DIM UNTIL EVENTUALLY TURNING OFF. FOUND LT FORWARD EMERGENCY EXIT LIGHT INOPERATIVE. R & R LT FORWARD EXTERNAL EMERGENCY LAMP. OPERATIONS CHECK SAT. REINSTALLED BATTERIES 1, 2, 3, 4 CHARGED BATTERIES. OPERATIONS CHECK SATISFACTORY. NO FURTHER DEFECTS NOTED AT THIS TIME.