RING VIDEO DOORBELL PRO / PRO 2 Doorbell Mechanical Chime Not Ringing

Pro Power Kit V2

This component is a level-shifting bypass that manages the current flow between the smart doorbell and the mechanical chime. It is designed to allow the doorbell to draw constant power for video functions while providing a low-impedance path to trigger the chime solenoid when the button is depressed. A failure in this module prevents the electromechanical plunger from receiving sufficient power to strike the chime bar.

16V 30VA Doorbell Transformer

Mechanical chimes require a high inrush current to actuate the striker plunger. Standard 10VA transformers often suffer from significant voltage sag when powering both the smart doorbell's active WiFi/IR components and the chime solenoid simultaneously. Upgrading to a 30VA transformer provides the necessary power overhead to ensure the solenoid reaches its magnetic saturation point and successfully rings the chime.

Video Doorbell Pro Spare Parts Kit

This kit includes the mounting bracket and terminal screws. Forensic teardowns show that the spring-loaded pins on the back of the doorbell housing can lose their elastic constant over time due to thermal cycling. This results in poor physical contact with the mounting bracket terminals, preventing the electrical 'short' required to complete the circuit to the house's mechanical chime.