Dewitt wrote:
It's getting power and the transformer is vibrating a bit, but there
is nothing coming from the bulb. I suspect it's likely the bulb but
don't have a spare to try. Any ideas on how to diagnose where it's
actually the bulb or possibly the transformer? Guess I could take a
meter to the socket and look for power there, but I don't know what
voltage to look for and really wouldn't want to accidentally short it
out.

deg

Well, you know, in a way this is a no brainer. Buy a bulb! That's, by
far, the most likely problem and what's the worst that can happen? The
worst that can happen is that it's the transformer and then you will
have the spare bulb you really need anyway when you fix or replace the
transformer.

Steve