As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HEAVY ACRID SMELL (ELECTRICAL OR PLASTIC) EMANATING FROM BEHIND CAPTAINS SEAT. F/O NOTICED A GREEN FLASH AND THE CAPTAIN HEARD A LOUD POP JUST BEFORE THE SMELL. MAINTENANCE FOUND A BAD LIGHTING CONVERTER AND MEL'ED THE SYSTEM IAW MEL 33-4.