The Multiplex system works differently than what most of us are used to, and I wish I could offer a diagnosis for your symptoms, Bill, but I can't. I was waiting for someone that understands Multiplex
workings to proffer an idea. All I can put out there is to ask if the fuses you checked were the 10 amp ones on the black Multplex boxes or other lighting circuit fuses upstream from the multiplex?
Even if you find a blown fuse, one has to ask what caused reading lamps to blow, just from switching on the bedroom overhead. It is so strange, there has to be a more obvious reason.
Joel