I recently came across a good deal on a Marshall Valvestate VS102R amp. However , there is a cable that is shorting out on me. It is the cable that connects from the output jack (standard 1/4" jack ) to the main speakers. Does anybody have any idea where I can get an original replacement or equivilant part for this? I have a picture of the back of the amp and cable, but I can't put it on here.