As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LGW FL 94 - YELLOW BULK AVIONICS SMOKE AND IFE OFF ILLUMINATED ON THE F/A IFE CONTROL PANEL. CREW NOTED A 'HAZE' IN THE CABIN NEAR ROW 20. MAINTENANCE REPLACED THE POWER SUPPLY ASSEMBLY. INVESTIGATION IN THE AREA OF ROW 20 SHOW NO EVIDENCE OF ANY PROBLEMS.