As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - EES - C12 CHECK - EMERGENCY BATTERY WIRING HARNESS WIRING SHORTED IN FIRST CLASS CEILING AREA. REPAIRED AND OPERATIONAL CHECKED EMERGENCY BATTERY WIRING HARNESS WIRING SHORTED IN FIRST CLASS CEILING AREA IAW BSWPM 20-30-12 AND B757 AMM 33-017AW.