That "Video On" light indicates that the entertainment system is powered. However, the "Airshow" system uses the distributed video system all the time, so the "Video On" light is on all the time, invalidating the intent of the light. We could do a modification but due to the rules, we'd need an STC and that's very expensive. The simplest choice would be to take the filament out...
How do they (Uncle Bill Boeing) do these things?