Coffee maker powers on but will not start brewing when the START button is pressed; no pump or heater noise.

Safety first: Unplug the unit before internal checks.

• Verify all closures: Ensure the water reservoir, brew basket, lid, and carafe are all correctly installed and fully closed.
• Try manual override: On some Kenmore models, pressing and holding START for several seconds can override minor errors. Consult the manual.
• Check START button feel: If the button feels mushy or does not click, the tact switch on the board may be worn and should be replaced.
• Inspect safety switches (advanced): Access and test lid, basket, and carafe switches with a multimeter. Replace any that do not change state when actuated.