The doorbell quit working and I'm guessing the transformer is bad since it is no longer making a humming noise. So I bought a new one from Home depot and the instructions say that it's not to be placed in an attic. Does anyone know a reason why it can't be located there? The original transformer was in the attic for probably 30 years since the house was new. I don't know where else I can put it without knocking a hole in the wall and re-wiring. Any ideas??