As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT PFD STARTED TO FLICKER 1 HOUR INTO FLIGHT. STROBE EFFECT. VERIFIED DISCREPANCY. FOUND LT PFD TO FLICKER AT POWER UP AND THEN GO BLANK. REMOVED LEFT PFD AND RIGHT PFD. CONNECTED LEFT PFD IN RIGHT SIDE, PFD STILL FLICKERS AT POWER UP AND THEN GOES BLANK. REINSTALLED RIGHT PFD. REMOVED AND REPLACED LEFT PFD. IAW MM 34-60-35.