If it's just the switch, see if it can be replaced by a switch bought at Radio Shack. Several of my Gammill parts can be bought inexpensively at Radio Shack and replaced by the owner, like the front and back hand control buttons. Gammill deliberately made their longarms that way---maybe yours is the same. Another place you may be able to find the switch is at Lowe's or other home warehouse. See if you can take the switch off and take it with you for comparison. Good luck.