No chime after removing Nest - Wiring help

[wlmcgrew]

Hi friends,

My Nest Gen 1 wired doorbell recently died, still works as a camera but if you press the button to ring the doorbell it kills the unit.  You just get a green flashing light and have to reset it get it come back online.  After exploring this forum I've found this is common issue for units 3 years old or so.  

Since the camera still works fine, I've plugged the nest doorbell directly into the wall via USB and have the camera pointed out my front window.  I purchased a $7 doorbell from the hardware store and am attempting to go back to a simple doorbell.

However I'm really struggling.  After removing the Nest unit from the wiring in the chime box and hooking it back up in a basic configuration I've got no chime.  In fact, the doorbell has a light which doesn't even come on with this wiring config.  I've added a diagram of before and after of my wiring.  Any ideas what I've got wrong?

I've looked all over but have not located my doorbell transformer, but I can only assume the yellow wires go to and from the transformer.  

[janthadeus]

Hi wlmcgrew, 

I’m sorry for the delay. Thanks for trying to isolate the issue with your Nest Hello doorbell (wired). It looks like it’s not getting any power from your transformer. Let’s sort this out —  a few questions: what’s the voltage of your transformer? How’s the temperature of the doorbell (warm, hot, cold or normal)? What country are you located in? Has there been any recent power outage in your area? Also, has it been exposed to direct sunlight?
 

Here are some troubleshooting steps you can try:
 

1. Ensure the wires are connected securely into the doorbell.
2. Remove the wires from the doorbell then use the included USB cable to plug your camera directly into a USB port on your computer.
3. When the light pulses blue, wait for a couple of minutes to reconnect it to your Wi-Fi. Otherwise, your doorbell is dead.
4. Mount your doorbell to the wall plate.

Important: When the doorbell shows a blue pulsing light when connected to a computer, it means it’s working. There may be issues on your wires or transformer. I recommend scheduling a visit with our partnered Nest Pro. 

Thanks,

JT

[EmersonB]

Hey everyone,

@wlmcgrew, I'm dropping by to ensure that everything is covered here. How's it going with your Nest Camera? We would appreciate it if you could share the information I’m asking above. Also, were you able to perform the steps I’m suggesting? We'd be glad to hear from you.

I appreciate the help, JT.
  
Regards,
Emerson

[EmersonB]

Hey wlmcgrew,

Just one quick final check in here since activity has slowed down. We'll be locking the thread in the next 24 hours, but if you still need help, we would be happy to keep it open. If there's more we can do, just let us know.
 
Best,
Emerson