Right, if it was one of the first vogue of Next Generations then it might have a buzzing interlock. The same goes for the drum as the 5.5 kg drum came in 1988. The dial should be available as a spare. Depending on the type of interlock used there will be a way to open the door. If it has a pecker interlock like most Next Generations then all that is required is a tug of the cable. If it used the electric interlock then there should be a manual override in it, probably just a matter of slding something on it.