I have had exactly the same problem, but noticed that the plastic drive wheel ahd melted by the drive belt. An awfull engineering cock up by the B&D design. Further, replacement of drive not available or alternative offered by B&D. Product should have been recalled.
Shame on B&D not to act and leave consumers with a dead product forking out on a 'trusted tool' supplier?
Hey ho for Bosch and higher end product with much better understanding how to deal with their market!!
Pierre, September 2010