Im jacking around with some HES Technobeams. I was going to to go change the working lamp in one of the white fixtures to a broken lamp in a black fixture. When I did I gave power back, it said lamp error before booting up. When I go to test then to lamp on it flashes LERR. I thought it was weird so I took the working lamp and put it into a fixture I knew was working, as I had just tested it. It did the same thing. I continued to do this and now have 8 techno beams in the graveyard. I have check the fuses, voltage, everything looks fine. I’m sure I'm missing something basic.... any ideas? I haven’t bought brand new lamps yet. The lights are just here for me to take apart and try to learn a bit more about the maintenance and repair of a moving light. (any resources in that field are welcomed) so I haven’t wanted to spend the $250 for a lamp on fixtures that I don’t use. That being said, I know seven of these lamps worked before I changed them.