Doorbell Hums But Doesn't Ring

By +Don Vandervort, HomeTips

If the bell doesn't ring, but the transformer hums when the button is pushed:

1) Check the bell. Be sure the wires are connected to the terminals in the bell unit. If necessary, clean the contacts with fine sandpaper or electrical contact cleaner.

2) Check the piston. It may be worn and jammed inside its sleeve or gummed up if someone has tried to oil it in the past (something you should not do). If this is the case, replace the electromagnetic/piston component or the entire bell unit.

3) Check the wiring. Look for any breaks in the doorbell wiring. If you find one (or more), strip the insulation from the wire ends and splice them with a short piece of matching wire, using properly sized wire nuts.
Copyright © 1997-2012, Don Vandervort, HomeTips, LLC. All rights reserved. Reproduction without permission is prohibited.




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