How do you find the portion of a cable that is shorted out?

Question

I have several guitar cables and, recently, a super nintendo controller that either work extremely inconsistently or not at all. I know i can take the guitar cables to a music shop to get them fixed, but what about the controller?

Answer 1

The cable can't be shorted somewhere. It should have been broken where it is often bended or moved. Or just near the jacks.