sounds like a dead short, probably due to a blown window motor. if you are good with electronics the first thing you should do is test the wires make sure none of them are pinched off in the door hinge boot. Next test the switch, or go to a junk yard and pull one. third test the window motor, remove it from the door, and hook it directly to a power source. see if it moves. its about 300$ to have it done at a shop, depends on how much you use that window