NAC Charging Station Internal Fault

Robot lawnmower base station LED indicates a fault (blinking or red) but the mower shows no specific error code.

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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

Failed power supply adapter, Internal fuse blown on base PCB, Overheated boundary transmitter, Water ingress into base housing

How to Fix / Troubleshooting

Safety first: Unplug the NAC power adapter from mains before opening the base station. Do not work on live circuits.

  • Check adapter: Test the power adapter output with a multimeter. Replace if there is no or incorrect voltage.
  • Inspect housing: Open the base and look for signs of moisture, corrosion, or burnt components.
  • Check internal fuse: Some NAC bases have a replaceable fuse on the PCB. Replace only with the same type and rating if blown.
  • Dry and reseal: If water ingress is found, dry the base thoroughly and replace any damaged seals or the entire base housing.

Warning: If you are not experienced with electronics, do not attempt PCB repairs; replace the complete charging station.

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Repair Difficulty

Hard 4/5

Required Part

Charging Station Assembly
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