Clean Contacts on Doorbell Button
It’s said “the postman only rings twice.” That should be sufficient, unless your doorbell is broken. In that case, you might be a lonely person. Don’t be lonely — simply make a quick-and-easy repair.
Doorbell systems don’t have many moving parts. So, little can go wrong. One of the single-most common problems is corroded connections at the pushbutton unit. To make a fix, remove the cover from the pushbutton, loosen the screw connections, remove the wires and clean them until they shine.
Use the edge of a dull knife, sandpaper or emery cloth to do the job. Reattach the wire, and chances are you won’t be lonely any more.