Doorbell Transformer Buzzing

Reply

  #1  
Old 12-13-05, 08:38 AM
Member
Thread Starter
Join Date: Dec 2005
Posts: 257
Doorbell Transformer Buzzing

I noticed after moving into my home that the doorbell transformer buzzes very loudly. The transformer is in a closet in the basement and I can actually hear it buzzing while I'm upstairs - it is maddening. Is this normal or does this thing need to be replaced? Keep in mind that my doorbell works normally.

Also, I've never seen a doorbell transformer like this. It is attached to the light fixture in the closet. The light fixture looks like a simple, white porcelain, pull chain base and the transformer is attached to it with no wires between them. Is it possible to have a plug-in transformer here? What store would carry something like this?

Thanks - I am going to have many questions on this house since I spotted wires held together with electrical tape (yikes!)
 
Sponsored Links
  #2  
Old 12-13-05, 08:42 AM
Member
Join Date: Nov 2004
Location: CA
Posts: 2,041
Your transformer set up is very typical.

As for the buzzing, it can be caused by a stuck button. You could just disconnect the wires at the chime ( mark each wire's location). If the buzzing stops, replace the door buttons. Otherwise, it is just a worn out transformer. This happens. Some laminations become unglued and vibrate, or whatever. Get a new transformer.
 
  #3  
Old 12-13-05, 08:45 AM
Member
Thread Starter
Join Date: Dec 2005
Posts: 257
So then it just basically plugs into the fixture like a normal plug? Can I just unplug it to work on it or do I still need to kill the power at the breaker?

Thanks
 
  #4  
Old 12-13-05, 08:54 AM
Member
Join Date: Sep 2003
Location: Central New York State
Posts: 13,973
I have never seen a doorbell transformer that was plug in. They are hardwired. To replace it you need to turn off power to the circuit.
 
  #5  
Old 12-13-05, 11:16 AM
Forum Topic Moderator
Join Date: Oct 2002
Location: Hamilton County, Ohio
Posts: 4,294
Since the doorbel works normally, the buttons are not stuck. You have what is called a hysteresis hum caused by the "E" and "I" plates vibrating. Only long term cure is to replace the transformer.
 
  #6  
Old 12-13-05, 11:35 AM
Member
Thread Starter
Join Date: Dec 2005
Posts: 257
Thanks folks - once I figure out how to separate the transformer from the light fixture - I'll replace it. Home Depot has doorbell transformers for $8 to $13.
 
  #7  
Old 12-13-05, 04:35 PM
Member
Join Date: Sep 2005
Posts: 176
Swapping

If it is a trypical white porcelin or pull string lamp fixture, you remove the 2 screws on the fixture to get into the ceiling box, The trans will have 2 wires going to a black and white wire nut respectively. Remove them. Then you will see the trans mounted with a 1/2" thin nut--remove that, and install the new one in the reverse order. Shut off power first. Good luck!
 
  #8  
Old 12-13-05, 05:47 PM
Member
Thread Starter
Join Date: Dec 2005
Posts: 257
Thanks everyone!
 
Reply

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
Display Modes