My granddaughter recently bought a home that had a Nest Hello partially installed. I say "partially," because it wasn't connected to the existing doorbell chime. From the looks of things, the previous owner tried but to connect the doorbell chime but couldn't get it working. My grandson-in-law attempted to make it work, and in the process overheated the chime connector. I've since worked with the system and found that the transformer is working and that the wiring is good (no shorts or open circuits). The Nest camera and doorbell button are also working fine. I did determine that the existing doorbell chime needs to be replaced and have purchased a new one. But, before I go back to finish the installation, I'd like to be prepared to diagnose the serviceability of the chime connector. I'd buy a new one, just to be on the safe side, but at $49 I'd rather first determine whether one is needed. I'm suspicious that it might not be because it got hot, which means it was jwired improperly. That brings me to my question: Can anyone know the procedure for bench testing a chime connector?
