I was in the shop a couple of days ago, when one of the fluorescent fixtures
stopped working. It wasn't in my line of sight at the time, but I think
there was a pop and flash, followed by darkness. It's a newish fixture with
an electronic ballast. I suspect that the ballast went kablooie, but I
don't know how to test it, if it's even possible for me to test the output.
I'd appreciate any pointers.

todd