What was found
DURING EMERGENCY EXIT LIGHT TEST FLIGHT DECK EMERGENCY LIGHT ABOVE FIRST OBSERVERS SEAT INOP. TROUBLESHOT PER B757 WDM 33-51-12 AND FOUND THE REQUIRED 6 VDC FROM THE BATTERY OPERATED POWER SUPPLY AT LIGHT SOCKET, BUT HAD NO GROUND. WILL REQUIRE FURTHER T/S. GROUND WIRE BROKEN AT R10381, REF 757 WDM 33-51-12. GROUND WIRE REPAIRED AND SECURED, REF B757 SWPM 20-40-00. EMERGENCY LIGHT OPS CHK GOOD, NO FURTHER DEFECTS NOTED.