Masterbuilt Intermittent Power or Control Interruption

Smoker shuts off randomly during a cook and may restart if you press power again.

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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

Loose power cord connection at back of smoker, Failing power switch, Overheating control board, Internal wiring harness loose at control board

How to Fix / Troubleshooting

Safety first: Unplug the smoker before inspecting wiring. Allow it to cool if recently used.

  • Secure power cord: Ensure the cord is fully inserted into the smoker and outlet. Avoid tripping hazards that could tug on the cord.
  • Inspect power switch and wiring: Remove the control housing and check that the power switch terminals and wiring harness connectors are tight.
  • Check for heat damage: Look for browned or melted plastic near the control board. If the board is overheating, ensure there is adequate ventilation and no insulation blocking airflow.
  • Reseat harnesses: Unplug and replug all harness connectors on the control board to eliminate intermittent contact.
  • Replace faulty components: If the switch feels loose or the board shows heat damage, replace the affected part.
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Repair Difficulty

Medium 3/5

Required Part

Power Switch
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