Kitchen Aid Dishwasher Won't Start

Dishwasher will not fill and start. When you push the drain/cancel button it will drain. Found no power going to the fill valve. Checked fill valve, (OK) checked float switch, (OK) checked door switch, (OK) checked circuit board fuse, (OK). Replaced control circuit board and things got worse. Still won’t fill and start. I get some (not all) display lights, but now I don’t have the drain/cancel function. Please help!