Circuit board repair involves diagnosing and fixing issues on printed circuit boards (PCBs) that are essential for electronic devices. Common problems include broken connections, damaged components, and short circuits. Technicians use specialized tools to identify faults and may replace or solder components to restore functionality. The repair process often starts with visual inspections and testing with multimeters. If a component is found to be faulty, it can be desoldered and replaced with a new one. Successful circuit board repair can extend the life of electronic devices, making it a valuable skill in the electronics industry.