Safety first: Unplug the microwave before removing the control panel.

User-level checks:

1. Power reset: Unplug for 5–10 minutes and plug back in. Sometimes static or minor glitches can cause keypad errors.
2. Check for moisture: If steam has been condensing around the control panel, gently dry the area and allow the unit to sit unplugged for several hours.

Advanced steps:

3. Remove control panel: Typically, remove the top grille, then lift or unscrew the control panel assembly.
4. Inspect ribbon cable: Disconnect and inspect the flat ribbon cable from the keypad to the main PCB. Clean the contacts gently with isopropyl alcohol and reseat firmly.
5. Test keypad: Using the service manual keypad matrix, test continuity across the membrane switches. If multiple keys are unresponsive or shorted, replace the keypad or entire control panel assembly.

If E07 persists after keypad replacement, the main control board may be defective and should be replaced by a technician.

Microwave shows E07 and will not start; keypad and display otherwise appear normal.

Possible Causes