This section will cover how to replace a transformer.
Door chime transformer replacement.
If the doorbell rings the switch needs to be replaced.
If the voltage is too low replace the transformer to repair your doorbell unit.
The voltage should be at or around 16.
A look around the doorbell should give a pretty good idea where it might be.
First remove the wires from the doorbell switch the button mechanism and touch them together.
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.
Make sure you understand how to shut off power to the circuit controlling the tansformer before attempting this repair.
If the switch isn t the issue head to the chime or the indoor doorbell mechanism.
It will likely be in the immediate vicinity though in the attic right above in the basement or in a nearby closet.
Measure the voltage on the transformer to see if it s producing enough electricity.
Wiring a doorbell transformer is more complex than replacing a doorbell button or chime unit.