"Tony" wrote in message
ups.com...
I have an overhead, ceiling-mounted,.tracklighting system which
consists of six 35W Halogen lights on a 9-foot track with a canopy
type, in-line transformer which is marked: I/P: AC120V-60Hz 1.5A, O/P:
AC 12V 50-230W. Been working fine for 2 years but suddenly died. After
making sure all connections were tight and of course checking the AC
input side (which was OK) I removed the transformer which contains 2
wires (black/white) going in and 2 wires (Red, larger gauge) coming
out. I just don't know how to check the output of the transformer to
see if I'm getting 12VAC out? Do I just put my test probes across the
two red wires? Or one at a time to a ground? Can anyone help me on
this. Thank you very much. (As you can see, I know very little about
electronics!)

Just put your meter across the two red output wires. Don't be surprised if
this shows as more than 12V AC. That would be normal.
I am guessing that if you disconnect the transformer completely and check
the wires using your meter on resistance range, the output would seem fine
but you would get no reading from the input.