my labtec speaker set's sub is broken. the power port was the problem as i had to jiggle it to work so i opened up my sub box and tried to fix it, instead i broke the PCB where all the wires are inputted. speaker and box itself is ok, but the circuit board needs replacing. HOw hard is it to do for a complete amateur (never touched this before which is why i broke it by accident ). Should I bother or just spend 50 bucks to get another set, it wasn't that expensive to begin with.