Introduction to the process steps of PCBA board repair

During the production process of PCBA boards, improper operation by personnel or material quality issues often lead to defective PCBA boards. In such cases, the defective boards need to be repaired. Today, let's introduce the detailed process of PCBA board repair.

• Visual Inspection of PCBA: This step involves checking the PCBA board for any visible defects from the production process, such as: short circuits, cold solder joints, missing components, reversed component polarity, and damaged components.
• Measure All Power: The main task here is to measure whether the power source has a short circuit to ground.
• Power-on Test for Defects: After powering up, use a testing fixture to double-check for defects.
• Repair Based on Defective Phenomenon: The repair is carried out according to the defect symptoms and circuit principles. The repair work can refer to the repair operation guidelines provided by engineering.
• Self-check After Repair: After the repair, the repaired section needs to be self-checked. This includes checking for short circuits, cold solder joints, solder balls, solder dross, and the appearance of solder joints.
• Test Fixture Check: Use a test fixture to check whether the PCBA board is repaired properly.
• Visual Full Inspection: Perform a full inspection on the repaired product.

By repairing defective PCBA boards, the number of scrapped boards can be reduced, which helps lower the factory's production costs.