What was found
EMERGENCY LIGHT TEST FAILED WITH MESSAGE. REPLACED OVERWING POWER SUPPLY AND BATTERY, NO HELP, NOW HAVE INTERNAL LOADS AND EXTERNAL LOADS FAULT, LIGHTS AT SEAT, ROWS 23, 29, 35,3 6, 37 DO NOT LIGHT UP. REPLACED LT POWER SUPPLY UNIT AND BATTERY. GOT "INT LIGHT FAULT". REPLACED LIGHT ASSY AT SEAT 29. SEAT 35, 36, 37 OP-CHECK SATISFACTORY. FOUND BROKEN WIRE AT SEAT 23. DEFERRED DUE TIME. ONLY SEAT 23 LIGHT IS INOPERATIVE, STOWED WIRES.