As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: IN FLIGHT CAPTAINS PFD BLINKED OFF/ON FOLLOW BY STRONG ELECTRICAL SMELL, NO ECAM, SMELL DISSIPATED AFTER A FEW MINUTES. REPLACED CAPTAINS DISPLAY UNIT AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK PER AMM 31-63-22