It appears that I have a pool light issue that seems a bit strange (to me, at least). Our pool was completed about 5 years ago, and earlier this Summer I noticed that our main pool light, a Pentair Amerlite, was getting dimmer. This seemed strange to me...I figured the failure mode would simply be no light at all. Over the course of a week or two, the light continued to look dimmer, then finally was completely dark. I opened up the panel of the control center (Jandy Aqualink) and confirmed that 120V was getting to the pool light side of the relay that it's on. This light didn't have a very high number of hours on it, but I figured some things fail earlier than expected, so no big deal.
Anyway, I went ahead and replaced the bulb and gasket. Everything seemed OK with the fixture...no signs of corrosion anywhere, no signs of leaks (it was completely dry inside where the bulb is housed). After replacing the bulb, everything seemed to be working fine and I figured I was done. Well, after only 4-5 weeks of having the new bulb in there, I'm noticing that the light is getting dimmer again! I noticed this a couple of nights ago, and I think it was a little dimmer again last night. So obviously something is not right. The spa light, which is on its own relay, is still working just fine.
Can anybody give me some suggestions as to what should I be looking at to try and figure this out?