As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE TAXIING TO REPOSITION ACFT, FLIGHT CREW REPORTED SMELLING & SEEING SMOKE FROM THE INSTRUMENT PANEL. THE ACFT RETURNED TO THE RAMP WITHOUT INCIDENT. PERFORMED A GND RUN ON THE ACFT & OBSERVED THE COPILOTS ELECTRONIC VSI INDICATOR SCREEN FLICKER & THEN WENT BROWN, THE SMELL OF A HOT ELEC COMPONENTS WAS NOTED. NO WIRING DAMAGE WAS NOTED & THE INTERNALLY FAILED EVSI WAS REPLACED & AN OPERATIONAL CHECK FLIGHT PERFORMED SATISFACTORILY.