If the doorbell rings the switch needs to be replaced.
Door chime transformer replacement.
Wiring a doorbell transformer is more complex than replacing a doorbell button or chime unit.
If you need to know how to install a transformer for the first time call a qualified electrician.
Measure the voltage on the transformer to see if it s producing enough electricity.
A look around the doorbell should give a pretty good idea where it might be.
How to replace a doorbell transformer although the doorbell itself operates at low volatagge that is unlikely to shock you replacing a transformer involves working with line voltage circuit wires.
Before attempting to replace the transformer ensure the problem isn t with another part of the doorbell.
Unlike the push button or the doorbell that reside in full view the transformer is concealed.
This section will cover how to replace a transformer.
It will likely be in the immediate vicinity though in the attic right above in the basement or in a nearby closet.
Test the doorbell transformer voltage by setting the meter on your voltage tester to 25vac volts alternating current.
The voltage should be at or around 16.
If the switch isn t the issue head to the chime or the indoor doorbell mechanism.