As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT NR 3993 REPORTED AN ELECTRICAL ODOR DURING SHUTDOWN OF THE APU WITH THE ASSOCIATED CIRCUIT BREAKER N-8 POPPING. MAINTENANCE REMOVED AND REPLACED THE APU CONTROL PANEL DUE TO THE GENERATOR SWITCH STICKING IN THE ON POSITION. ALL OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.