Whirlpool (Kenmore) Model 665.16032400 dishwasher won't start, button doesn't light and is unresponsive. Door latch relays has continuity. Thermal fuse has continuity if test while in wiring harness is valid.
Cancel light switch switches on/off with 4 see hold and the Normal Cycle light switch stays on regardless. Reset attempts leave the start lamp unlit and button start unresponsive.
How might I test for mother board/ timer vs. control panel replacement?