doorbell transformer buzzing
#1
07-04-10, 04:03 PM
doorbell transformer buzzing
Hello,
I recently added a switch to a light. The box also housed the doorbell transformer. When I turned the circuit breaker back on, the switch and light work fine, but now the doorbell transformer buzzes noticeably. The doorbell still works. I checked the connections and wiring for shorts, but ultimately disconnected the transformer, leaving my doorbell disabled. I should mention that the original box was so old that I was unable to get any of the ko's out. I wound up just putting everything into a new box, but things did a little roughed up while I was trying to pop out a ko.
Is the transformer bad? Should I just get a wireless doorbell to replace this one?
Thanks for the help.
I recently added a switch to a light. The box also housed the doorbell transformer. When I turned the circuit breaker back on, the switch and light work fine, but now the doorbell transformer buzzes noticeably. The doorbell still works. I checked the connections and wiring for shorts, but ultimately disconnected the transformer, leaving my doorbell disabled. I should mention that the original box was so old that I was unable to get any of the ko's out. I wound up just putting everything into a new box, but things did a little roughed up while I was trying to pop out a ko.
Is the transformer bad? Should I just get a wireless doorbell to replace this one?
Thanks for the help.
#3
07-04-10, 10:18 PM
Hmmmm....
The new box I installed caused the transformer to not quite fit well, as it was up against the floor joist. So that could be it.
I did, however, try hooking it up dangling in the air to see if it was vibrational. Same sound dangling in the air. Does that mean it's not vibration? Or do i need to get it mounted securely in a new box?
Many thanks for your response.
I did, however, try hooking it up dangling in the air to see if it was vibrational. Same sound dangling in the air. Does that mean it's not vibration? Or do i need to get it mounted securely in a new box?
Many thanks for your response.
#4
07-05-10, 06:40 AM
Those transformers typically mount ouside the box and have a built-in clamp that uses a knockout in the metal box.
For the small cost I might try to change the transformer.
For the small cost I might try to change the transformer.
#5
07-05-10, 03:14 PM
Update, problem solved...
Thanks for the help. Turned out my transformer was for an intercom system and had two black load wires. I had wired it as if one of the black wires was a neutral.
I bought a new transformer anyway with a white and black wire and installed it tightly in its own box. Works fine. No buzzing.
Thanks for the advice.
I bought a new transformer anyway with a white and black wire and installed it tightly in its own box. Works fine. No buzzing.
Thanks for the advice.
