As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING SERVICE CHECK, FOUND EMERGENCY LIGHTS INOP FROM FLIGHT DECK TO MID LAV ON R SIDE. FOUND WIRE SHORTING UNDER SEAT 1. RECONNECTED PLUG REF B757 WDM 33-51-12 & BSWPM CH.20. REPLACED PICO FUSE #1 ON M730 BATTERY CHARGER REF B757 AMM 33-51. PERFORMED EMERGENCY LIGHTS TEST WITH NO DISCREPANCIS NOTED. (LP 8163985 - AIRCRAFT WAS GROUNDED)