Bosch Internal Power Supply Instability

Bosch EV charger randomly reboots during charging (LEDs go off and back on), causing brief interruptions.

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

Failing low-voltage power supply on PCB, Loose internal connectors, Overheating of regulator components, Voltage dips on supply line

Safety first: Turn OFF the breaker before any physical inspection.

Check supply stability: Have an electrician verify that the line voltage is stable and not dropping significantly under load.
Improve cooling: Ensure vents are clear and the charger is not installed in a confined, hot space.
Service inspection: A technician can open the unit, check for loose connectors, and measure the low-voltage rails. If unstable, the main control board or internal power supply components must be replaced.

Hard 4/5

Main Control Board / Internal Power Supply

Check Price on Amazon

We may earn a commission from links on this page.