What was found
SHIP 0669 EMERGENCY LIGHTS INOPERATIVE AT SEATS ROWS 18 DEF TO 22 DEF. CORRECTIVE ACTION: SWAPPED BATTERIES AND CHARGERS AT L2 AND R2 DOORS; LIGHTS CAME ON ROWS 18DEF-22 DEF BUTNOW INOP AT ROWS 4 DEF 5 DEF 15 DEF 16 DEF. ORDERED NEW CHARGER AND BATT BUT NO FIX. STARTED REINSTALL OF ORIGINAL PARTS PER B757 AMM 33-51-07. REMOVED AND REPLACED FUSES IN CHARGER M732. CKS OK. BATT PACKS AND CHARGERS ABOVE L2 AND R2 INST REF B757 AMM 33-51. OPS CHECKS NORMAL. (4756969)