Danby
Start Circuit or Door Interlock Not Engaging
Microwave display works but pressing START does nothing; timer does not count down.
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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
Defective START button on keypad, Faulty door switch not signaling closed, Failed control board input circuit, Loose keypad ribbon cable
How to Fix / Troubleshooting
Safety first: Unplug the microwave before any disassembly.
- Door check: Open and firmly close the door. Listen for distinct clicks from the door switches. If the door feels loose or does not latch firmly, the latch or switches may be faulty.
- Try multiple keys: If other keys (time, power level) respond but START does not, the membrane keypad may have a worn START contact.
- Power reset: Unplug for 5 minutes, then plug back in and test again.
- Advanced inspection: Remove the control panel and reseat the keypad ribbon cable on the control board. Inspect for corrosion or damage.
- Next step: If START remains non-functional, the keypad or control board will need replacement. Because the door interlock is involved, consider professional service.
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Repair Difficulty
Medium
3/5
Required Part
Membrane Keypad
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