Driving home tonight, the driver's side wiper stopped mid-motion. The passenger side still continue to work. Pulled over to the side of the road and moved the driver's side down to the start position. It feels like it's moving quite easily so I suspect that it is the linkage which is broken rather than anything else. I'm planning to take it apart tomorrow to have a look, but does anyone have any idea if this is something which can be repaired or does it need replaced?