Safety: Unplug the microwave before working on the control panel.

Steps:

1. Power cycle: Unplug the unit for 10 minutes, then plug back in. If SE returns immediately, a key is likely stuck or shorted.
2. Dry the panel: If SE appeared after cleaning or a spill, leave the door open and allow the control area to dry for several hours. Do not use the microwave until the error clears.
3. Inspect keypad: Remove the control panel fascia and check the membrane keypad for signs of damage, bubbling, or corrosion at the connector.
4. Reseat ribbon cable: Disconnect and reconnect the keypad ribbon cable to the control PCB, ensuring it is straight and fully inserted.
5. Replace keypad: If SE persists and certain keys do not respond or appear permanently pressed, replace the membrane keypad or full control panel assembly with a Logik-compatible part.

If a new keypad does not resolve SE, the control PCB may have a shorted key-scan IC and should be replaced by a technician.

Microwave beeps continuously and shows SE; some keys may appear to press themselves or keypad is completely unresponsive.

Possible Causes