The reason that they go down but not up is because they are usually binding in the track inside the door. You can remove the door panel and grease it with silicone grease to fix the problem. Usually its not the switch, but if you press it too much the switch will get burned out because it overheats inside from the current. If you remove the door panels, you should be able to switch the left and right switches to trouble shoot the switches. If you switch them and the right one goes down now, then you know the old right switch is bad.