Maytag 24 in. MDB9750AW Dishwasher "quiet series 400 panel" Questions

...Quiet Series 400 Model # MDB76001AWB I have lost all lights and functions on the top contol panel but if i press the start button the dishwasher will operate but no numbers/letters apear on the door ...

...Quiet Series 400 has stopped getting the dishes clean..It leaves residue and food on the dishes.My husband has taken it apart and there is nothing that he can find that might cause this.We have ...