Ring Pro Doorbell Chime Buzzing

Looking online there seem to be plenty of reports of people having trouble with buzzing chimes usually when they first connect the doorbell and sometimes after a month or two.
Ring pro doorbell chime buzzing. I replaced the doorbell chime with a heath zenith 2735 from the approved list same issue. I just installed a ring pro and connected the power kit to 1 of 2 mechanical doorbell chimes in our 1 year old house with a pre existing 16v transformer. My ring video doorbell 2 is buzzing non stop after working well for 6 months. Your ring video doorbell pro is designed to draw power from the same 16 volt ac power transformer as your internal doorbell mechanism.
Your ring pro requires a power source that supplies a minimum of 16 volts ac. I have two ring pro video doorbells connected to a mechanical chime. I hung my old indoor chime cover over the exposed wires and pro power kit t hen i ordered a wireless chime from ring that i ll configure into my system. I ran brand new doorbell wire to support this installation.
Mine is only 10va so they are sending me a replacement one that is 30va. Was getting 12v out but only 6v at both chimes and ring doorbell. To check the voltage of your ring pro open the ring app select your ring pro and tap device health. So as a sanity check i tested the downstairs chime box i left the upstairs box disconnected and still received buzzing.
First the ring device will no longer charge. The internal mechanical doorbell works perfectly the ring does not. That worked successfully for a couple of weeks. Disconnecting power causes two major problems.
No more buzzing 12v at both chimes and button and doorbell button and chimes work again. Second the indoor chime won t ring when someone hits the doorbell. Ring doorbell guide working about 10 15 days ago and guessing from low voltage and not enough to keep the battery charged. When i originally installed my ring doorbell pro i upgraded my transformer to a 16v 30va.
Furthermore they informed me that i need a 30va transformer for my mechanical door bell. Problems can arise however when a doorbell mechanism draws so much power that there s not enough left over to power your ring video doorbell pro. When the ring pro was setup initially months ago i disconnected the downstairs chime box because the doorbell can only be setup to receive power from one transformer. But then one of the ring pro s started going offline due to low voltage.
Disconnected the ring doorbell and reinstalled old doorbell button. I started by using the 16v 10va transformer that came with the chime. No more annoying hum. For ring pro to function correctly the voltage needs to be listed as good or when you tap it at least 3 900mv.