Panasonic Keypad / Membrane Switch Failure

Microwave display works but some buttons do not respond or respond intermittently.

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

Worn membrane keypad, Moisture or cleaning fluid intrusion, Loose ribbon cable between keypad and control PCB

Safety: Internal access to the control panel exposes mains voltage; leave internal work to professionals.

User actions:

Dry the panel: If recently cleaned, unplug the microwave and allow the panel to dry for several hours.
Avoid harsh cleaners: Clean the panel only with a slightly damp cloth and mild detergent, then dry.
Test pattern: Note which buttons fail; if entire rows or columns are dead, the membrane is likely failing.

Next step: A technician can replace the membrane keypad or the entire control panel assembly.

Medium 3/5

Membrane Keypad / Control Panel

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