When your indoor mechanical or digital chime fails to ring when your video doorbell button is pressed, it is usually caused by incorrect wiring configuration, insufficient power supply from the transformer, or an incompatible digital chime kit. Many smart video doorbells require a small bypass module (often called a power kit) installed across the chime terminals to regulate current flow; omitting this module can cause the chime piston to buzz weakly or remain completely silent. Additionally, an underpowered transformer cannot supply enough current to drive both the video doorbell and the mechanical chime. You can troubleshoot chime issues safely by checking wiring connections. You can verify that your corrective action is successful when installing the proper power kit module, upgrading to a stronger transformer, or securing loose terminal screws restores a loud, clear chime.
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