I have a fairly basic variable speed cordless drill with adjustable torque
and hammer action, with a 14V motor I think.
Recently the variable speed stopped working. All other functions are fine
and the drill operates fine at max speed.
I understand that the linear potentiometer trigger mechanism which operates
as a speed controller may be worn, but is this worth replacing?
I bought the drill for about £20, any ideas on how much a replacement part
as above might cost?
I have also read that you can use an "inexpensive external motor speed
controller" what is this and how inexpensive is "inexpensive"?