Thermomix Intermittent Power Loss / Thermal Cutout

Thermomix powers on but shuts off unexpectedly during cooking or mixing.

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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 of internal electronics triggering thermal cutout, Loose mains plug or internal power connector, Failing power supply components, Blocked ventilation causing high internal temperature

How to Fix / Troubleshooting

Safety first: Unplug the appliance and allow it to cool before further use.

  • Improve ventilation: Ensure the unit has adequate space around it and is not placed near heat sources or in direct sunlight.
  • Check plug fit: Make sure the mains plug fits firmly in the outlet and that the cord is not being pulled or twisted during operation.
  • Clean vents: Remove dust from ventilation openings using a soft brush or vacuum.
  • Monitor usage: Avoid running long, high-temperature programs back-to-back. Allow short cooling periods between intensive uses.
  • Service if recurring: If shutdowns continue, internal power supply or thermal sensors may be failing and should be checked by a technician.
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Repair Difficulty

Medium 3/5

Required Part

Main Control Board (Power Supply / Thermal Protection)
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