OK, I answered my own question. :) I removed the bottom plate to reveal all of the working (turning) parts and put just a drop of singer sewing machine oil at the junction of each metal part where it turned. As I was putting it at one place in particular and turning the outside drive wheel, it suddenly started freeing up. I turned it on its end so that the oil would run into the junctures of where they move and put the place back on. I plugged in it and wa-la it works like a charm.
Glenda, April 2013
