how can i fix my ghd's?

i have had my ghd's for a year now and a few months ago a little bit of the wire snapped. i carried on using them for a while untill it started sparking and smoking from the wire. does any one know how they need to be fixed and where i could send them? i dont really want to send them back to ghd as thay are expensive and take to long.( i cant live that long without them lol)