Finding a cable break in Husqvarna Automower robotic lawnmower boundary wire using a MW/AM radio

This is a tutorial, how to find cable breaks in Husqvarna Automower robotic lawnmower boundary or guide wire using a MW/AM radio, a multimeter and a car battery.
Boundary wire resistance:
smaller than 20 Ω - solid or blinking (ECO mode) green light illuminated by charging station LED;
20 - 50 Ω - solid blue light illuminated by charging station LED (only some models);
more than 50 Ω - blinking blue light illuminated by charging station LED.
Blinking yellow light is illuminated by charging station LED, when there is a brake in at least one of the guide wire (only some models).

[@kpowerbg]

The best detailed explanation! Thank you very much for your help

[@jon964]

When you connect the battery I see that a connection + on the left cable - on the right cable. When you connect like this, doesn't it mean that you short-circuit the boundary cable?

[@ouherizon]

Yes, during the short most electrical energy is being converted into thermal energy, which in turn melts the conductive material (copper, aluminum, tin) first in places, where electrical resistance is the biggest in the circuit. When cable is completely broken and there is no current flow, break can be found using AM radio.

[@uksupporter8867]

I have o e that says no break as solid red light but the lawnmower insists there is

[@ouherizon]

Solid red light means there is an issue with the charging station circuit board or an incorrect/defect power supply is connected to the charging station.

[@Bill-zp2mt]

Husqvarna robot mower is hot garbage, have to fix issues every year and it cost money. Cables are so weak that they just break from weathering around the charging box.

[@ouherizon]

That's not robots problem, incorrect wire has been installed. I have H07V-U 1.5 mm² wire installed in 2017 spring, soldered together and ABSOLUTELY no problems.

[@bitterNDsweet]

Where's your logic, man? Husqvarna does not make cables. My Husqv mower with original cables has been working well for 5 summers so far. All cable brakes have been due to my sharp shovel. I need to sue the shovel producer...