Use Google - select Images - enter Start Stop Switch
If you see a similar switch or a worthwhile looking alternative then just follow the link...
Good luck...
Peccavi
January 2013
take the switch out and you might be able to open it and clean the switch contacts and sort it out.If it has melted you will need to replace.Sorry no idea where from
Cordless
January 2013
Automatic Answer
We may have found other answers which could help you.