Russell Hobbs Door Interlock Circuit Stuck Closed

Microwave light, fan, and turntable run when door is closed, even 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

Welded door interlock switch contacts,Shorted wiring in interlock harness,Misadjusted door switch bracket,Control PCB relay stuck on

How to Fix / Troubleshooting

Danger: A microwave that runs with the door closed but not commanded is unsafe. Unplug immediately.

  • 1. Disconnect power: Unplug the microwave and do not use it until repaired.
  • 2. Door switch inspection (advanced): With the cabinet removed and unit unplugged, locate the door switches. Check for signs of overheating or melted plastic. Replace any switch with welded or burnt contacts.
  • 3. Check switch bracket: Ensure the bracket is not bent, causing switches to remain actuated even when the door is open.
  • 4. If switches are good: The main relay on the control PCB may be stuck closed and will require board repair or replacement.
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Repair Difficulty

Professional Required 5/5

Required Part

Door Interlock Switch Set
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