1. The main circuit is blocked. Check whether the base and power cord of the hot water kettle are normal with a multimeter. Usually, the base is wet and the contacts are oxidized and rusted, which leads to poor contact and power failure.

2. Check the switch assembly, mainly to check whether the main power plug of the switch assembly is normal. The switch assembly is in the handle. Because it is often in high temperature, the plastic at the plug of the main power supply will melt, and the contact of the switch will shift, which will lead to the failure to connect the power supply, which will lead to the indicator light going out, and the heating plate will be dead and unable to heat. In this case, the switch assembly can be replaced.