As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU WAS STARTED & ELECTRICAL POWER WAS APPLIED TO ALL SYSTEMS. AFTER ABOUT 15 MINUTES AN ELECTRICAL BURNING ODOR WAS NOTED FOLLOWED BY SMOKE, A BLANK PFD 2 & ILLUMINATION OF THE PFD 2 FAIL LIGHT. REMOVED NR 2 PFD & VERIFIED BURNING ODOR IS COMING FROM UNIT. INSTALLED NEW PDF. OPS CHECKED GOOD IAW MM 34-26-00.