I needed to replace a 12volt 100watt lamp, so I pull out a spare. After installing it I find it doesn't work, so I try a second spare. No luck! Then, a third and a fourth. No luck, no luck!! I ended up going through 9 spare lamps and none of them worked. At this point I test the socket on the projector with my meter. The socket works! I test the lamps with my meter. No reading. I test other lamps of different voltages and watts and they test good. I try the bad 9 lamps in another projector and they still don't work. I tried sanding the prongs on the bad lamps and they still don't work.
They have been sitting here for around eight years and I bought them from several different sellers.
Has this ever happened to you?