What was found
EXTERIOR EMERGENCY EXIT LIGHT INOP AT DOOR R4 REMOVED AND REPLACED THE LIGHTBULB, PREFORMED OPS CHECK, OPS CHECK FAILED, REF AMM 33-51-06-962-001-001 FURTHER TROUBLESHOOTING NEEDS TO BE PREFORMED. PER FIM 33-51 FAULT TREE 803 REPLACED FUSE IN THE EMERGENCY POWER SUPPLY PER AMM 33-51-07-962-071.NO HELP.PERFROMED INSPECTION OF THE LIGHTS ASSEMBLY AND FOUND CORROSION ON THE CONTACT.CLEANED THE CONTACT AND INSTALLED NEW BULB PER AMM 33-51-06-962-001-001.OPS CHECK GOOD.