SE
Bomann
Keypad Stuck Key / Shorted Membrane
Microwave beeps continuously and shows SE; some keys may appear stuck.
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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
Liquid spill into keypad, Physically stuck button, Shorted membrane contacts, Damaged keypad ribbon cable
How to Fix / Troubleshooting
Safety: Unplug the microwave before working on the control panel.
- Step 1 – Inspect for spills: Look for signs of liquid or food residue around the keypad. If present, gently clean the surface with a slightly damp cloth and mild detergent, then dry thoroughly.
- Step 2 – Allow to dry: If a spill recently occurred, leave the door open and allow the control panel area to dry for 24 hours. Do not use heat sources to dry it.
- Step 3 – Reseat ribbon cable: Remove the control panel, disconnect the keypad ribbon cable, inspect for corrosion, then reconnect firmly.
- Step 4 – Replace keypad: If SE persists, the membrane keypad is likely shorted. Replace the keypad or entire control panel assembly as specified for your Bomann model.
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Repair Difficulty
Medium
3/5
Required Part
Membrane Keypad
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