Printed circuit boards are manufactured according to designer specifications. However, problems can occur during the construction process, or accidents happen along the way that renders them faulty. In either case, it is sometimes necessary to repair a malfunctioning circuit board or perform some other maintenance once you complete PCB repair training.
In most cases, a PCB is damaged physically when the electronic product is dropped from a height or hit forcibly by another object. Therefore, ensure to check the board thoroughly for visible breaks or cracks. If a board isn't hooked up appropriately or the voltage protections aren't up to par, a board is at high risk for burning out. Having detailed hook up instructions can help alleviated technician error. Moreover, the power failure occurs when specific components on the PCB board are exposed to a higher voltage.