As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: ROWS 19-22 DEF SIDE OF CABIN, VIDEO SCREENS FLICKERED ON AND OFF COINCIDING WITH A POSSIBLE ELECTRICAL ODOR. NO SMOKE OR HAZE WAS OBSERVED. MAINTENANCE REPLACED QUAD SEAT ELECTRONIC BOX AT SEAT ROW 21 PER THALES AMM 44-24-32 AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK.