Our whirlpool dishwasher has push button panel with lights; on left are the cycle selections. The first five will light, but the last, "rinse only" does not. None of the option buttons in the center of the panel will light up. Start and cancel buttons do nothing. I got into it and checked door switches with my tester and they are good. The panel has a 14 post connection to the control board. (I'm not sure this terminology is correct, but that's what sounds right) Next to that connection there are two test posts. I think the front panel is bad, but is there a way to test it to be sure?