As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - FLT 3505 - ADVISORY DISPLAY UNIT SCREEN WENT BLANK AFTER TAKEOFF FOLLOWED BY ELECTRICAL SMELL IN THE COCKPIT AND CABIN. REMOVED AND REPLACED ADU. ALSO, REMOVED AND REPLACED ASSOCIATED CONTROL PANEL AS A PRECAUTION. AIRCRAFT RETURNED TO SERVICE. REF: OPER CNTRL NR 99ZZZX2829. (X)