What was found
EMERGENCY EXIT LIGHTS ILLUMINATED AFTER GOING TO SHIPS POWER. DEFER APU DUE TO EXTERNAL PWR RELAY STICKING AND GEN RELAY PER MEL REF 49-1, CONTROL NR 18533 , PLACARD INSTALLED. DEFER APU DUE TO EXTERNAL PWR RELAY STICKING AND GEN RELAY PER MEL REF 49-1, CONTROL NR 18533, PLACARD INSTALLED. FOUND EMERGENCY LIGHT RELAY TO BE BAD. REMOVED AND REPLACED RELAY, SYS OPS CK NORMAL IAW BMM CH 33-50-00, THIS CLEARS DMI NR 18533, PLACARD REMOVED, P/N INSTALLED, 10-60450-3 NO S/N.