As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: THE AFT OVERHEAD AND BOTH AFT DOOR EXIT SIGNS ARE BLINKING RAPIDLY. ALSO BOTH AFT SLIDE ARMING SIGNS ARE BLINKING ON THE DOOR/OXYGEN ELECTRONIC CENTRALIZED AIRCRAFT MONITOR. ACCOMPLISHED TSM 33-51-00-810-819-A, FOUND DIODE PACK 1158VD BAD. REMOVED AND REPLACED DIODE PACK 1158VD IAW ASM 33-51-00.