Symptoms
- Pressing the doorbell button produces no sound
- Chime unit is silent or makes odd buzzing
- Smart doorbell shows offline or not charging
Likely causes
- CommonA stuck, worn, or disconnected doorbell buttonButtons see constant use and weather exposure and commonly fail or corrode.
- CommonA tripped breaker or blown fuse for the doorbell circuitThe doorbell transformer is often on a household circuit that can lose power.
- PossibleA failed or underpowered transformerTransformers wear out over time, and smart doorbells often need more power than an old transformer supplies.
- PossibleA broken wire connection somewhere between button, transformer, and chimeWiring in exterior walls can corrode or come loose.
- PossibleA failed chime unitThe chime box itself can fail even with good power and wiring.
What to do
- Check the breaker panel for a tripped breaker labeled doorbell or similar.
- Inspect the doorbell button for corrosion, looseness, or visible damage.
- If you have a smart doorbell, check its app for connectivity or battery status.
- Locate the transformer, often near the furnace or in a basement/utility closet, and check for a small reset button or visible damage.
- Test continuity of the wiring with a multimeter if you're comfortable doing so, or leave this to a professional.
- Try a replacement button first, since it's the cheapest and most common failure point.
- Call an electrician if the transformer or internal wiring is suspected, since transformers involve line-voltage connections.
Tools and parts
- Multimeter (optional)
- Screwdriver
Replacement doorbell buttonSearch: “wired doorbell push button”
Doorbell transformerSearch: “doorbell transformer 16v 30va”
When to call a pro
Call an electrician if the transformer needs replacing, since it connects to your home's line voltage wiring.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.