Ambrogio Intermittent Power Loss / Loose Connection

Robot lawnmower randomly stops with no error on display and then restarts later

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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 battery connector, Oxidized main switch contacts, Internal harness connector not fully seated, Hairline crack in PCB solder joint

How to Fix / Troubleshooting

Safety first: Turn OFF the robot and remove it from the lawn.

  • Check battery plug: Open the battery compartment and ensure the battery connector is tight and free of corrosion.
  • Operate main switch: Flip the main switch ON/OFF several times to clean contacts. If it feels loose or intermittent, consider replacing the switch.
  • Inspect internal connectors: Open the top cover and gently press all multi-pin connectors into the main board to ensure they are fully seated.
  • Monitor behavior: After reassembly, observe the robot during a full cycle. If random shutdowns continue, the main board may have an internal fault.
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Repair Difficulty

Medium 3/5

Required Part

Main Power Switch / Internal Wiring Harness
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