I turned the arm and adjusted the angle of the light then turned on the dimmer/switch. The dimmer went off like a fire cracker and died. I was afraid that I short circuit it. I tried to adjust the light back to its original position but no matter what I did, I killed all replacement dimmers, costing me more than $100. I don't know what's going on. Can anyone help me please? I'd really appreciate your help. Thanks Gf