Solved. As I posted it occurred to me that the holder (I only in-inherited the controller with the attached hand piece and no other accessories) must contain a magnet that shuts the device down when hand piece is placed in there. So now I guess the easiest way is to short the reed switch out. Justin On 28 July 2016 at 14:47, Justin Richards wrote= : > I just destroyed a 15" transducer so with nothing to lose decided to try > and dis-assemble and maybe repair. > > I started to use a hot air station but it seemed every time I pointed the > gun downwards it cut out. > > Dismantled the hand piece several times finding nothing obvious but > noticed a reed switch and pondered its presence. > > Finally it dawned on me that it was cutting out in the presence of the > magnetic field. > > Anyone have any clues as to why there is a reed switch glued to the insid= e > of the handle. > > Justin > > > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .