SE
Oster
Stuck key or shorted keypad error
Microwave beeps continuously and displays SE; keypad may appear to press itself or be unresponsive.
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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 contacts, Moisture or liquid inside control panel, Damaged keypad ribbon cable, Faulty control board key-scan circuit
How to Fix / Troubleshooting
Safety first: Unplug the microwave before working on the control panel.
- Power reset: Unplug for 10 minutes, then plug back in. If SE returns immediately, a hardware fault is likely.
- Dry and clean keypad: If the panel was exposed to steam or spills, leave the unit unplugged for several hours to dry. Wipe the surface gently with a dry cloth.
- Inspect keypad ribbon: Remove the control panel and check the ribbon cable for corrosion or damage. Reseat it firmly into the control board connector.
- If SE persists: Replace the membrane keypad or the entire control panel assembly. If a new keypad does not resolve the issue, the main control board may also need replacement.
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Repair Difficulty
Medium
3/5
Required Part
Control Panel / Keypad Assembly
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