As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE OVERWING EMERGENCY LIGHT DOES NOT TURN ON. TROUBLE SHOT PER 33-50-00 810-801. DURING CHECK POWER SUPPLY B5-119 REPLACEMENT BECAME REQUIRED. POWER SUPPLY WAS REPLACED PER AMM 33-51-03 AND TEST WAS PERFORMED PER AMM 33-51-00. OPERATIONAL TEST IS OK.