Microwave displays E6; keypad may be locked or unresponsive.

Safety first: Unplug the microwave before opening any panels.

• Hard reset: Disconnect power for 10–15 minutes to allow the control board to fully discharge. Plug back in and check if E6 clears.
• Check outlet and power: Verify the outlet provides stable voltage (no flickering lights or tripping breakers). Avoid using lightweight extension cords or power strips.
• Inspect control connections (advanced): Remove the outer cabinet and inspect the wiring harnesses going to the display and control board. Ensure all connectors are fully seated and not corroded.
• Next step: If E6 persists after a reset and wiring check, the main control board is likely defective and must be replaced. This is a moderate repair but still involves exposure to internal components; consider professional service.