/How to solve the technical problems caused by manual welding?
1.Inspection of the appearance of the sample. Check the appearance of the solder joints on the board and carefully observe the board with a stereo microscope.
2.Test the circuit board’s reaction. At normal temperature, test the resistance on the board with a multimeter and test the surrounding solder joints to see if there is any fault phenomenon.
3.AOI checks. X-ray inspection of the board, especially check whether there are abnormal connections near the resistor, whether the connector on the board is abnormal, whether the internal copper wire is abnormal, or whether the resistor is abnormal.
4.Failure recurrence. In order to verify the board failure mode, look for the cause of the failure and perform a constant hot flash test with and without resistance.
Dear Customer At the beginning of the new year, Vientiane is renewed. All employees of FASTPCBA International Co., Ltd. deeply thank you for your long-term support and love to our company. I sincerely send you my sincere blessings and greetings. In the new year, our company w...
① Standard components should pay attention to the dimensional tolerances of components from different manufacturers. Non-standard components must be designed in accordance with the actual size of the components and the land pattern and the space between the land. ② When designing high-reliability...
The water cleaning process of PCB circuit board uses water as the cleaning medium. A small amount (usually 2% to 10%) of surfactants, corrosion inhibitors and other chemicals can be added to the water. The PCBA cleaning process is completed by washing, washing and drying the source of pure water ...