Commercial Chef Membrane Keypad Wear / Failure

Microwave buttons are unresponsive or only some keys work 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 conductive traces in membrane keypad, moisture intrusion behind keypad, loose ribbon cable connection, cracked control panel PCB

Safety: Unplug the microwave before removing the control panel.

Quick checks:

Wipe the keypad surface clean and dry.
Remove the control panel and reseat the keypad ribbon cable into the control board.

If problem persists:

The membrane keypad is likely worn and must be replaced. On many Commercial Chef units, this means replacing the entire control panel assembly.

Medium 3/5

Membrane Keypad Assembly

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