McCulloch Intermittent Power Loss / Loose Connection

Robot mower randomly restarts or shuts down during operation without an error code.

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.

Possible Causes

Loose battery connector, Cracked solder joint on main PCB, Damaged main power switch, Vibration-related wiring fault

Safety first: Turn OFF the main switch and remove the mower from the lawn.

Inspect battery connector: Open the battery compartment and ensure the connector is tight and locked.
Check main switch: Wiggle the main switch gently; if the mower power flickers, the switch may be faulty and should be replaced.
Inspect internal wiring: Look for loose plugs or wires that could move with vibration. Reseat all connectors on the main PCB.
If problem persists: The main PCB may have internal cracks or cold solder joints and should be replaced.

Medium 3/5

Main Power Switch

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