[header] How to replace a doorbell chime [title] Buy a new doorbell chime. [step] You should be able to find one at your local hardware store, or at any home supply store. Doorbell chime boxes are rectangle-shaped boxes, roughly 6 inches by 4 inches (15 cm by 10 cm). 
The specific chime sound of each doorbell-e.g. a traditional " ding dong " or a novelty ring-should be marked clearly on the box.