You can fix it, but it will not be pretty. The only way to fix it, is to cut the plastic away from the plug. It is fairly soft and can be cut using utility knife but be careful not to go beyond the compartment. The factory DC plug has metal tabs instead of wires, the + is the one in back - is near edge and not sure if the 3rd tab on right does anything. Replace with plug with similar positive on center pin plug. It is helpful to keep the tabs from old plug, make tiny hole, solder new plug wires to the tabs, then solder tabs to board. This fixed the plug for me and kept the sound. Wish I had tried re-soldering the factory tabs to the board first to see if that was the cause.. but got frustrated and had ripped it out before thinking of that.. Inside the green box, + slot marked red, neg marked blue, and third tab marked yellow functional but ugly