My doorbell has stopped working. I am trying to test each of the components using a multi-meter.
However, the wires seem to go through the ceiling etc, so I can't trace where they are going or what they are for.
I have identified a box which I think may be the transformer though:
Using the multi-meter, I measured voltage AC by connecting the red lead to the screw and the black lead to ground. I got:
- (2) having 250V AC
- (3) having 18V AC
(4) having 10V AC
Between (1) and (2), I got a reaching of 250V AC
- Between (3) and (4), I got a reading of 12.5V AC.
Is this enough to establish that (a) this is the transformer, and (b) it is working?