As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT RETURNED TO ATL WITH BURNING ELECTRICAL SMELL IN THE FLIGHT DECK. UPON ARRIVAL MAINTENANCE FOUND THE FIRST OFFICERS VSI HAD A BURNT SMELL TO IT. THE VSI WAS REPLACED AND ALL INSTRUMENT PANELS WERE INSPECTED ALONG WITH ALL EQUIPMENT IN THE GALLEYS WITH NO FURTHER TROUBLE FOUND.