Blomberg
Intermittent Power or Safety Cut-Out
Microwave runs for a few seconds then stops and resets to the clock without heating the food.
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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
Overheating thermal cut-out opening,Loose power connection on control board,Faulty door switch opening under vibration,Defective control board
How to Fix / Troubleshooting
Safety: Unplug the microwave before internal inspection.
User checks:
- 1. Try different loads: Test with a light load (cup of water). If it still stops after a few seconds, the issue is internal.
- 2. Observe door: Watch the door during operation. If it moves or vibrates, a loose latch or switch may be opening.
Advanced steps:
- 3. Check door switches: Test all interlock switches for intermittent operation by gently moving the door while monitoring continuity.
- 4. Inspect thermal cut-outs: Test cavity and magnetron thermal cut-outs. Replace if they open at too low a temperature or are unstable.
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Repair Difficulty
Hard
4/5
Required Part
Thermal Cut-Out
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