Black+Decker
Door interlock safety failure
Microwave runs with the door open or starts when the door is closed without pressing START.
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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 or welded door switch contacts, Miswired door switch harness, Failed control board input circuit
How to Fix / Troubleshooting
Danger: A microwave that runs with the door open is extremely hazardous. Unplug the unit immediately and do not use it.
- Do not attempt to operate: Do not test or run the microwave again until repaired.
- Inspect door switches (if qualified):
- Remove the outer cabinet.
- Locate the door switch cluster.
- Check for melted or welded switch contacts.
- Replace all door switches: For safety, replace the full set of door interlock switches with Black+Decker-approved parts.
This condition should be corrected by a qualified technician to ensure radiation safety.
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Repair Difficulty
Professional Required
5/5
Required Part
Door Interlock Switch Set
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