As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTS “L SIDE EADI WENT BLANK FOLLOWED BY STRONG, VISIBLE SMOKE IN THE COCKPIT. NO CB'S POPPED AT TIME OF FAILURE. DPU1 IN AVIONICS BAY FOUND TO BE THE ISSUE. REMOVED AND REPLACED DPU1. OPS CHECKS GOOD AT THIS TIME. PART REMOVED:P/N 622-7713-004, S/N 3042.