If you’re replacing the chime box as well, the chime location is typically near the front ... if so you may need to clean wires with wire brush or clean doorbell terminals) Faulty transformer (use ...
The Family Handyman on MSN15d
How To Wire a Second Doorbell Chime
Can't hear the doorbell from the back of the house? It's easy to correct that by adding a second doorbell chime.
Most people stumble when they get to the point where they have to connect their low-voltage microcontroller up to the relatively beefy transformer that drives a standard doorbell. We’ve seen a ...