OK Total Keypad / Control Input Failure

Microwave keypad is unresponsive; no buttons work but display may be lit

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Disconnected keypad ribbon cable, Failed membrane keypad, Locked control (child lock), Failed control PCB input circuitry

Safety: Unplug the microwave before accessing the control panel.

1. Check for child lock: Look for a lock icon. Try holding STOP/CANCEL or LOCK key for 3–5 seconds to toggle.
2. Power reset: Unplug for 10 minutes and reconnect.
3. Inspect keypad ribbon: Remove the control panel and ensure the ribbon cable is fully seated and not damaged.
4. Replace keypad: If the ribbon and connector are good but no keys respond, replace the membrane keypad.
5. If a new keypad does not restore function: Replace the control PCB.

Medium 3/5

Membrane Keypad

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