As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE FLIGHT CREW REPORTED THAT DURING PREFLIGHT CHECKS THE NO1 PRIMARY FLIGHT DISPLAY (PDF) CIRCUIT BREAKER TRIPPED. THE FDR FAIL ANNUNCIATOR ILLUMINATED, ELECTRICAL SMOKE AND SMELL IN THE DEVELOPED IN THE COCKPIT. THIS CAUSED THE SCHEDULED FLIGHT TO BE CANCELLED. THE MAINTENANCE TEAM DETERMINED THE NO1 PDF WAS DEFECTIVE AND WAS REMOVED. A TESTED/INSPECTED PDF WAS INSTALLED. OPS CHECKS WERE GOOD AND THE AIRCRAFT WAS RETURNED TO SERVICE.