On 08/05/2016 15:23, Mr Macaw wrote:
My jigsaw started sparking and throwing out smoke, so I took it to bits,
found a shorted coil in the motor, and disconnected it. But it's still
doing this (sew video). Is there anything that can be done, or does it
go in the bucket?
https://www.dropbox.com/s/75z1zyve3jajgg7/Saw.AVI?dl=0
Consider the armature approximating a rotating transformer.
One segment that has a short is like shorting a winding in a transformer.
Either get a new armature, or get a new jigsaw. I would favour the latter.