I have heard some stories about reading lights on particular aircraft randomy flashing like disco lights. It especially seems to be reported more often on widebodies, especially the 767.
I was wondering, what would be the cause of this? I know that on most widebodies, reading lights are controlled by in-seat buttons or through the IFE system, rather than having buttons directly on the PSU. However, why does it seem to occur more often on 767s (espcially non-Signature Interior) than any other aircraft?