Need help--turn dw on the unit would fill up with water-----but would not start washing---------you could hear the control panel hum 4 times like it was trying to start but it would then shut off------I would turn unit back on and then hit start cancel button to pump out the water------after looking over the blog forum--(great info) I proceded to remove parts down to the impeller and cutter blade-----------found stuff that should never be in a DW --imagine that--after replacing parts the unit worked but motor made a lot of grinding -harsh noise--------I took out all the parts again --even the cutter blade--- restarted unit ----everything works but with that harsh grinding noise-----have I lost a motor or bearings--or both---your suggestions would be quite helpful .

Thank you for your help