As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED DURING CLIMB AT FL290 ELECTRICAL SMOKE IN COCKPIT REQUESTED RETURN TO DEPARTURE AIRPORT ADS, ISOLATED NR 1 ELECTRICAL SYSTEM AND SMOKE DECREASED, REMAINDER OF FLIGHT UNEVENTFUL. WILL UPDATE THIS REPORT AFTER MAINTENANCE. REMOVED AND REPLACED FAILURE WARNING PANEL. OPS CHECK GOOD.