On Sun, 19 Dec 2010 16:56:04 -0500, "Ed Pawlowski" wrote:


wrote

If it's the button, why does the light go off when pressed? Seems to me
it's
a high impedance somewhere, the transformer perhaps.

It goes off because it breaks the light contact, but does not make a good
enough contact to ring the bell. BTDT

That's not how doorbell switches work. There is only one (normally open)
contact with the light across it (there is no "breaking" of the light
contact). When the button is pushed the circuit is closed, causing the bell
to ring and the light to go out. If the light goes out, the switch is closed.

My doorbell was broken for 20 years and I finally fixed it. Thankfully it
broke again; this time it will stay broken. People that I want to see know
to come to the side door.