My 27 year old doorbell started to hum & buzz all the time. Replaced it & the push button and the doorbell still hums & buzzes. Replaced the transformer and the doorbell still hums & buzzes. What else could it be?
 
wasps in the enclosure/s?
 
have you tried rubber washers under the transformer?
 
Is that Hums and Buzzes instead of ringing?

Or does it hum and buzz as well as ringing and it's the buzzing that's annoying?
 
the humming will be from the transformer ,end.or Wire stripper. Doorbell button. A humming doorbell is a common problem that is easy to fix. Since the button is used so often, it can get damaged or partially stuck in the contact position. The humming is usually caused by the button being stuck in the contact position.
 
the humming will be from the transformer ,end.or Wire stripper. Doorbell button. A humming doorbell is a common problem that is easy to fix. Since the button is used so often, it can get damaged or partially stuck in the contact position. The humming is usually caused by the button being stuck in the contact position.
It buzzes even if the push button isn't hooked up.
 
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Doorbell buzzing
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Security Alarms, Door Entry and CCTV (Public)
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Created
rihill,
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John Brown,
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