If there is a malfunction in the starting power supply, the appropriate repair location can be selected according to the specific situation:
If it's a small problem and you have a certain foundation in electronics, you can try to solve it yourself.
If it is a legitimate brand, you can contact the after-sales department of the brand you purchased, and they will arrange professional repair personnel to carry out the repair.
You can also find regular home appliance maintenance personnel for repairs, as the structure of emergency power supplies mainly consists of batteries, circuit boards, and lighting components. Home appliance maintenance personnel are usually able to handle faults in these parts.
The most professional repair location should be the manufacturer, especially for high-end emergency power supplies. However, from design to accessories, the manufacturer's maintenance costs may be high.
Please note that no matter which repair method is chosen, safety must be ensured to avoid further damage or danger during the repair process.