I did the same thing recently. I've been trying to get it fixed, but it doesn't seem to drain completely. Were you able to get yours fixed with the last answer that was posted? http://www.benfranklinplumbingmorganton.com/sewer-and-drain-cleaning-hickory/
not sure if you have a plastic arm that spins under or over the dishes, but mine did. I noticed that the holes where the water came through were plugged by calcium and food. I took a sewing needle and cleaned out the holes. It then sprayed water again. Hope this helps.
