Thank you for your question on the model LB14WH door chime. If the chime hums constantly, without a button being pushed, you would have a stuck button or a short in the chime wiring. If the chime only hums when the push button is pressed, the chime itself has been damaged, probably from a stuck push button, and would need to be replaced. It would be a good idea to also replace the push button.
Date published: 2016-11-14