If your Ring Video Doorbell Pro is causing a constant buzzing or humming sound from your mechanical doorbell chime, the issue is almost always power-related. The Ring Pro draws continuous power through the chime circuit even when idle, causing the mechanical plunger to vibrate due to constant low-voltage current flowing through the solenoid coil.

Quick answer

• Install the Pro Power Kit v2 inside your chime box to bypass the solenoid coil for power draw • Check transformer voltage — upgrade to 16V 30VA if you have an older 10VA unit • Verify correct wiring at both the chime box and transformer connections • Only applies to Ring Video Doorbell Pro and Pro 2 (hardwired models)

Symptoms

• Constant buzzing or humming sound coming from the wall chime box • Ring Doorbell unit occasionally reboots or loses Wi-Fi connection • Mechanical chime produces weak "dings" or phantom rings without button presses • Transformer feels extremely hot to the touch • Night vision features crash or become unreliable

Quick checks

Check if Pro Power Kit is installed: Open your hallway chime box and look for a small white square device connected between terminals. If missing, this is your problem.

Test transformer output: Use a multimeter to measure voltage at the chime box terminals. Should read 16-24V AC.

Verify chime type: Confirm you have a mechanical (moving plunger) chime, not a digital melody chime which is incompatible.

Step-by-step fix

1. Turn off power at the circuit breaker controlling your doorbell transformer

2. Open the chime box (usually mounted on a hallway wall)

3. Locate the terminals — look for TRANS (transformer), FRONT (front door), and sometimes REAR (back door)

4. Install the Pro Power Kit: • Connect one wire from the kit to the TRANS terminal • Connect the other wire to the FRONT terminal • Ensure existing chime wires remain connected to the same terminals

5. Verify all connections are tight in wire nuts or terminal screws

6. Turn power back on and test the doorbell

7. Configure the Ring app: • Open Ring app → Device Settings → Doorbell Settings • Set "Doorbell Chime Type" to "Mechanical" • Test chime functionality in the app

8. If buzzing persists, upgrade your transformer to 16V 30VA minimum

If it still isn't working

Replace the transformer: Older 10VA transformers can't provide stable power. Upgrade to a 16V 30VA model rated for video doorbells.

Bypass the chime entirely: If you don't need the mechanical ding, disconnect chime wires and twist TRANS + FRONT together. Change Ring app setting to "None" under Doorbell Chime Type.

Switch to Wi-Fi chime: Install a Ring Chime (plug-in) and completely disconnect the mechanical chime wiring. Cap wires safely with wire nuts.

FAQ

Can I skip installing the Pro Power Kit? No. The Ring Pro requires the Power Kit to regulate current flow. Without it, continuous current through the chime coil causes buzzing and potential damage.

Will this work with digital chimes? No. The Ring Pro and Pro Power Kit are designed only for mechanical chimes with moving parts. Digital melody chimes often get damaged by the constant current draw.

Does this apply to other Ring models? This fix only works for Ring Video Doorbell Pro and Pro 2. The Ring Doorbell Wired (2021) doesn't support mechanical chimes at all, and battery models don't power-steal through chime circuits.

Is the buzzing dangerous? Yes, potentially. A buzzing chime coil generates heat continuously. Extended buzzing can seize the solenoid or melt plastic housing components, creating a fire hazard.