This section will cover how to replace a transformer.
Door chime transformer replacement.
Wiring a doorbell transformer is more complex than replacing a doorbell button or chime unit.
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.
If the doorbell rings the switch needs to be replaced.
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.
If the voltage is too low replace the transformer to repair your doorbell unit.
Make sure you understand how to shut off power to the circuit controlling the tansformer before attempting this repair.
Measure the voltage on the transformer to see if it s producing enough electricity.
Test the doorbell transformer voltage by setting the meter on your voltage tester to 25vac volts alternating current.
It will likely be in the immediate vicinity though in the attic right above in the basement or in a nearby closet.
If you need to know how to install a transformer for the first time call a qualified electrician.
The voltage should be at or around 16.