My DW has not worked for 2 years now. It is stuck in a continuous drain cycle. I have once or twice (by pressing the cancel drain buttons) gotten it to start in a wash cycle but once it reaches a drain cycle it stays there. Is this the control panel?? How easy is it to replace the control panel in this model? Could it be something else? I.e. dirty float or a leveling problem?? The DW was used maybe 50 times. Thanks so much for your help!!