I HAVE THE SAME EXACT PROBLEM, AND I EVEN WENT THROUGH THE SAME PROCESSES TO DIAGNOSE THE ISSUE, MY CONCLUSION IS THAT THE GEAR INSIDE OF THE LATCH HOUSING, BECAME SEPARATED, IT IS HALF PLASTIC AND METAL, IT WILL ALLOW THE GEAR TO GO UP, BUT NOT ALLOW IT TO GO DOWN, THE GEAR MUST BE REPLACED, NOT THE MOTOR, AND NOT EVEN THE SWITCH, ITS THE GEAR.
Sunday, March 10th, 2013 AT 6:41 PM