As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT TAIL STROBE WAS OBSERVED NOT TO BE OPERATING. STROBE POWER UNIT WAS FOUND TO BE INOPERATIVE. REMOVED POWER SUPPLY AND REPLACED. POWER SUPPLY WAS OPENED AND FOUND CIRCUIT BOARD BURNED AROUND CAPACITOR. SUSPECT CAPACITOR NEVER DISCHARGED CAUSING IT TO BECOME HOT.