Unless PD will cover repairs for free, you should just seek out a replacement on the yard sale, since fixing it will be expensive. Usually, the flexing of field use will eventually break wire within the cable. It could have just as easily been the input side that went bad on you. There are oade cables on the YS fairly often, and you should just watch for one. Historically, the short oade cables hold up better than any of the other flavors of modified 7 pin cables, in my own experience.