The latch on our dishwasher had been broken for a while, but the dishwasher still worked. Then recently, the control panel became unresponsive. I ordered a new latch assembly and replaced it, but the control panel still doesn't do anything. No lights, nothing. The dishwasher does have power, because I'm getting current to the switches on the latch assembly. Do I need to replace the panel (around $150), or should I try something else first?