Jackson dishwasher powers on but will not start a cycle when the start button is pressed.

Safety first: Disconnect power before accessing control panels or switches.

• Confirm door/hood closure: Ensure the door or hood is fully closed and latched. Check the door interlock switch for proper operation.
• Check for active errors: Look at the display for any error codes. Resolve underlying faults before attempting to start a cycle.
• Test start button: For mechanical switches, test continuity when pressed. For membrane keypads, inspect the ribbon cable and test per service manual. Replace if unresponsive.
• Verify water level: Ensure the tank is filled to the correct level. A low-level interlock may prevent cycle start; troubleshoot fill issues if necessary.

If all interlocks and switches test good, the control board’s input circuitry may be faulty and require replacement.