Have to go trouble shoot a pool light Thursday. Customer said he thought it was burned out so he relamped but still doesn't work. He said GFCI is not tripped. I haven't worked on any pool lights so I wanted to get some ideas to be armed with before I go. So far I am thinking, bad lamp or bad contact in lampholder or open neutral. I am thinking deteriorated wiring in the conduit would trip GFCI, would it not? Assuming the GFCI is working. If anyone who works on pool lights has any tips I would appreciate hearing them. By the way, it sounds like a dry-niche.