djozz
(djozz)
4
Disconnecting the batteries should reset the driver and it should be out of lockout mode. If it is still dead after that, something is not making contact and the first to think of is the tube not making contact with the driver. Try tightening tighter (temporarily removing the o-ring helps for this check) or squeezing a straightened and curved paperclip between tube and driver, if the light works after that you will at least know where the problem is.