Safety: Unplug the microwave before removing the control panel or touching internal wiring.

User-level checks:

1. Check for lock mode: Some Sage microwaves have a child lock or control lock. Refer to the user manual to disable any lock function and test again.
2. Dry the panel: If the panel has been exposed to steam or cleaning fluids, leave the door open and allow the control area to dry for several hours. Do not spray cleaners directly onto the keypad.
3. Power reset: Unplug for 5 minutes and reconnect to clear any temporary control glitch.

Technician-level checks:

4. Inspect ribbon cable: Remove the control panel assembly and check the flat ribbon cable from the keypad to the control PCB. Ensure it is fully seated and not cracked or corroded.
5. Test keypad matrix: Using the service manual, test continuity across keypad matrix lines. A failed membrane requires replacement.
6. Replace keypad or control panel: Install a Sage-compatible membrane keypad or complete control panel assembly if the original is defective.

If only certain keys fail consistently, the membrane is likely worn and should be replaced.

Microwave keypad or touch panel is unresponsive or only some buttons work; display may be normal.

Possible Causes