i have a problem like this but i can help you. luckily you came along because my resistors came completly off the mobo so i can tell you where they are. look under the right speaker terminal, solder a wire to that and then solder the wire to another resistor the same size. now check and see it that works. if not, look to the left of the right speaker terminal, there should be a bunch of resistors, the bottom two resistors are to the speakers, bridge them. if you dont want to risk your mobo i can try and see how difficult it is to bridge them and let you know, and if it works, i can put pics up or something