Hi everybody. Recently, my UK LC100 died on me, after about 20 dives. I have always used rechargeable NiMh batteries, and maybe I didn't wait long enough for them to reach a lower voltage. I (wrongly) assumed it was the bulb, so I found a good deal and bought one, but it wasn't that. So I unscrewed the ballast to find the fuses, and found 2 items connected to the wires, wrapped in plastic, but don't know how to check them, and neither do the electronics stores in my area. Also, I pulled the Welch Allyn ballast from the housing, and the silicone holder with the notch for the bulb came off. Now I have no idea which way the bulb has to face. Can someone help me out with the orientation/alignment of the bulb (polarity wise)? I mean that the Welch Allyn piece is completely symetrical, except from the bottom rubber padding that has a notch, and the yellow and black wires. I can't find any sort of marking on it to use as a point of reference. Does anyone have a solution to this? As for the fuses, or whatever they are, how can I check them, and what are they exactly? Also, anyone with a schematic? I am totally confused and any help would be greatly appreciated. Thanks.