Essential Video Doorbell Wired installation to NeTone Chime

[Davidkjr]

The "Trans" terminal connector is not located with the Front and Rear terminals as others have discovered.  However, there appears to be a "non threaded" through hole terminal on the top left side of the circuit board and when tested showed almost a hot 14vdc powered by my original 32 year old transformer.  The circuit board schematic seems to show the yellow wire going/coming from that location on the back side.  You can search internet for  "NuTone LA-174 Installation Instructions" to see what I am referring to.  I have a new transformer to install that outputs 16vdc.  I think that if that presumed "T" connection is equipped with a screw, washer and nut it will provide the power needed for the power kit once the new transformer is installed.  I will report back my findings.

[StephenB]

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@Davidkjr wrote:

The "Trans" terminal connector is not located with the Front and Rear terminals as others have discovered.  However, there appears to be a "non threaded" through hole terminal on the top left side of the circuit board and when tested showed almost a hot 14vdc powered by my original 32 year old transformer.  The circuit board schematic seems to show the yellow wire going/coming from that location on the back side.  You can search internet for  "NuTone LA-174 Installation Instructions" to see what I am referring to.  

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I'm seeing the install guide (such as it is) here:

• https://www.broan-nutone.com/getmedia/0a5ecab8-b0f1-4110-8735-ea441036afd0/Installation-Guide-LA174....

I agree that the yellow wire is the one to which you need to connect the power kit.

Not sure if that will work though - often chimes with integrated intercom systems are not compatible with video doorbells.