E51
Electrolux
Stuck Key or Key Matrix Error
Microwave shows E51 and does not respond to some or all buttons.
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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
Shorted membrane keypad, Contamination (liquid/grease) under keypad, Damaged keypad ribbon cable, Faulty keypad scan circuit on control board
How to Fix / Troubleshooting
Safety: Disconnect power before working on the control panel.
User-level actions:
- Clean the panel: Wipe the keypad surface with a slightly damp cloth and mild detergent, then dry thoroughly. Do not spray cleaner directly onto the panel.
- Check for stuck keys: Gently press around the affected area to see if any key feels physically stuck.
- Power reset: Unplug for 5 minutes and test again.
Technician-level actions:
- Remove the control panel and inspect the keypad ribbon cable for damage or corrosion.
- Reseat the ribbon cable into the main control board.
- If the error persists, replace the membrane keypad or the entire control panel assembly, depending on model design.
- If a new keypad does not resolve the issue, replace the main control board.
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Repair Difficulty
Medium
3/5
Required Part
Control Panel Assembly
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