What happens if a power supply is not properly discharged before servicing?

When a power supply is not correctly discharged before servicing, it poses a shock hazard. Power supplies can retain a significant amount of stored electrical energy in capacitors even after they are unplugged. This residual charge can lead to electric shock, which can be dangerous or even fatal depending on the voltage and current involved.

Technicians must follow safety procedures to discharge capacitors safely to mitigate this risk. The remaining charge can also damage sensitive components within the power supply or any connected devices if the technician inadvertently interacts with them while energized. Proper training and techniques, such as using discharge tools or waiting a certain amount of time after power-off, are crucial to ensure safety during servicing. Understanding this risk emphasizes the importance of safety protocols in electronics maintenance and repair.