Narrative:

A burning-electrical odor was detected. I called the cockpit and advised. It originated from under the area of 35E. The audio-video controller on the floor was very hot. Then the 4 screens in that row shut down and the odor subsided. After 15 mins; the screens came back on. Being afraid the odor would return; I shut down the entire video system. We landed and maintenance disconnected the faulty audio/video controller. I pwred up the system with no further problems. We departed. Later it was discovered the audio/video unit in question's fan had failed. I suppose we could have averted an emergency landing if I would have pwred down the entire system immediately; but the captain had already declared an emergency and was well into his rapid descent.

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Original NASA ASRS Text

Title: B777 FA REPORTS ELECTRICAL FUMES WHICH APPARENTLY ORIGINATED FROM PASSENGER ENTERTAINMENT SYSTEM. CAPT IS INFORMED AND FLIGHT DIVERTS TO NEAREST ARPT AFTER EMERGENCY IS DECLARED.

Narrative: A BURNING-ELECTRICAL ODOR WAS DETECTED. I CALLED THE COCKPIT AND ADVISED. IT ORIGINATED FROM UNDER THE AREA OF 35E. THE AUDIO-VIDEO CTLR ON THE FLOOR WAS VERY HOT. THEN THE 4 SCREENS IN THAT ROW SHUT DOWN AND THE ODOR SUBSIDED. AFTER 15 MINS; THE SCREENS CAME BACK ON. BEING AFRAID THE ODOR WOULD RETURN; I SHUT DOWN THE ENTIRE VIDEO SYS. WE LANDED AND MAINT DISCONNECTED THE FAULTY AUDIO/VIDEO CTLR. I PWRED UP THE SYS WITH NO FURTHER PROBS. WE DEPARTED. LATER IT WAS DISCOVERED THE AUDIO/VIDEO UNIT IN QUESTION'S FAN HAD FAILED. I SUPPOSE WE COULD HAVE AVERTED AN EMER LNDG IF I WOULD HAVE PWRED DOWN THE ENTIRE SYS IMMEDIATELY; BUT THE CAPT HAD ALREADY DECLARED AN EMER AND WAS WELL INTO HIS RAPID DSCNT.

Data retrieved from NASA's ASRS site as of January 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.