Check the connector at the motor. Look for burned/corroded wires/terminals, look for broken wires, check the connections at the motor thermal overload switch as well. Check the condition of the capacitor and it's connections. It is located on the back panel near the water inlet valve. Pull the pump off the motor and see if motor will run. Easiest way to do all this is to remove the cabinet and jump out the lid switch for testing puposes.
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