Hello Thanks for the post. I purchased my 2.1 3 years ago and have used them maybe a dozen times. I found my preamp cable broke off, leaving the metal part of the DIN connector in the back of the unit. I was able to buy an old mouse w/ the six pin P/S connector, checked continuity & matched colors up correctly. Soldered and shrink tubed. Did final continuity test from the control board and all pins are correctly connected. When I plug in the unit and turn it on, the green led does not light, no sound except the usual initial speaker hiss/pop that occurs on connection. I have checked the fuse its good. The only thing I can imagine might be the problem is the wire gauge for the ground (shield) in the new connector. It is the same size as the other wires. The original cable has a much larger gauge for the shield wire, but I soldered them anyway. Any ideas?