As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED ERRONEOUS RIGHT STALL WARNING AND A MOMENTARY 'PUFF' OF SMOKE FROM RT INSTRUMENT PANEL. INSPECTION REVEALED PRESSURE BULKHEAD AREA BURNED. (CONNECTOR NR E339/439.) CONNECTOR WAS REPLACED AND GOLD PLATED PINS AND SOCKETS INSTALLED.