F7
Midea
Keypad Matrix Scan Error
Microwave shows F7; may beep and not respond to some keys.
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Safety Warning
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.
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Possible Causes
Partial keypad failure, Damaged keypad ribbon, Faulty scan lines on control PCB, Moisture intrusion in keypad
How to Fix / Troubleshooting
Safety first: Unplug the microwave before accessing the control panel.
Step-by-step checks:
- 1. Test all keys: Note which keys work and which do not. A pattern (e.g., entire row or column) suggests a matrix issue.
- 2. Dry and clean: If the panel was exposed to steam or spills, allow it to dry thoroughly. Wipe the surface with a soft, dry cloth.
- 3. Reseat ribbon cable: Remove the control panel and reseat the keypad ribbon cable on the control board.
- 4. Replace keypad: If F7 persists and some keys remain dead, replace the membrane keypad or full control panel assembly.
- 5. Replace control board if needed: If a new keypad does not fix F7, the control board matrix circuit is likely faulty.
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Repair Difficulty
Medium
3/5
Required Part
Membrane Keypad / Control Panel Assembly for Midea Microwave
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