As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE WITH AN ELECTRICAL ODOR BEGAN COMING FROM CENTER PEDESTAL WHILE INFLIGHT. THE AIRCRAFT WAS RETURNED TO EWR WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE SPOILER AUTOMATIC ACTUATOR BURNT AND SHORTING. THE SPOILER AUTOMATIC ACTUATOR WAS REMOVED AND REPLACED AND OPERATIONAL CHECKS WERE GOOD.