There are ways out there to fix audio cables, if that's what the problem is, I found this link in relation to that sort of thing... http
/www.tested.com/tech/accessories/2212-how-to-repair-a-headphone-cable-and-replace-a-jack-plug/
And what do you think might have cause a break in the headphones' wiring? It could be from the cable being under too much stress like bending and twisting, for example...