I need to find my doorbell transformer in order to change it for a more powerfull one (ring pro doorbell). I have opened the chime and i can see the transformer wire going in my basement, i did follow it using a tone device and it goes inside of a finished room... I have no idea after if it goes back up or in the attic. Attic is hardly accessible, in summer it's worse. It is hard to follow after that even with the tone because all cables related to that breaker will ring too. I have check inside the light fixtures, can it be in the light switch? Also, my chime says : "use with transformer 16V 10VA", i must change the chime too since my new one is 16V 30VA?
I have looked inside and outside of the electrical panel. I have also a utility room with the ceiling not finished and i cannot see anywhere my cable so it is getting transformed somewhere before. I have seen a transformer and some of them can be attached to the outside of a switch box/electrical box. The basement got a suspended ceiling so i can just cut the wire near a electrical box and wire the new transformer there but it would trigger me to know there is a dead cable with electricity somewhere. Also, does the chime can handle the new transformer? Even if the VA is higher?
I ended up cutting the cable near an outlet in the basement drop-ceiling. I wired the new transformer and it is working. My quest following the cables always ended up going into a finished ceiling so i could not find the old transformer. I don't like that but one day i will find the old one and remove it, i will use an endoscope camera with a led light to help me. Thanks everyone.