As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER STARTING RIGHT ENGINE, THE RT A.C. MAIN BUSS WOULD DROP OFF LINE AND THE A.C. RESET LIGHT WOULD COME ON. SELECTING THE RT CONVERTER 'ON' WOULD POWER THE RT BUSS, BUT COULD NOT RESET A.C. RESET LIGHT. A.C. WAS SHUT DOWN AND TROUBLESHOT TO RT POWER CONVERTER. AFTER REMOVING CONVERTER, FOUND BURN MARK ON OUTBOARD SIDE OF CONVERTER COVER.