What kind of circuit tester do I need?

[rgG]

billb wrote:
if the bulb doesn't come on it's a bad switch, bad wire nut connection or no voltage present or substitution of junk bulbs which 99.99% rgg can do a simple substitution..
safest way to take it apart to look and test is make sure Vac is off with the sniffer

Yep, tested the bulb in another lamp, it is good. Also tried another known good bulb. It is the little pull chain switch, I am pretty sure, as it has happened before, but before it broke in the on position, so it was easy to see when I had the right breaker. I will also label the breaker with Pantry light, when I find out which it is. I have made many "addendum" notes in the breaker box, over the years.

I will get a sniffer when I get the replacement fixture.