As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY EXIT LIGHTS ASSOCIATED WITH M2816 DO NOT ILLUMINATE. FOUND ACTUAL MALFUNCTION AFFECTING EMERGENCY LIGHTS ATTACHED TO M1675 POWER SUPPLY IAW WDM 33-51-12. TROUBLESHOT TO FAULTY M1675 POWER SUPPLY CONSTANTLY DISCHARGING BATTERY. REPLACED M1675 POWER SUPPLY & M1675 BATTERY & TESTED IAW AMM 33-51-06-960-805 & 33-51-06-960-806. INSTALLATION TESTING PASSESFOR BOTH PARTS REPLACED.