Clean the PCBs
After the PCBA is soldered, various flux residues appear on the board. Some residues are acidic, soluble, corrosive, etc. If these residues are not cleaned, they can cause great damage to the product. Therefore, after PCB board soldering, it should be cleaned as soon as possible. At the same time, it is necessary to prevent the cleaning agent from invading the unsealed components to avoid damage to the components.