kenwood dish washer kdw12sl3a?

My kenwood dish washer won't come on when switched on, the power light does not come on , this started few day ago after a circle washer with water residue on the base, cleaned the water up, turn the button on no power light; thought could be the fuse Changed it, still the same ; no power light
how do I get the light on and the dishwasher working again..
Thanks
peter