Circuit board cleaning method


Release time:

2020-03-02


1. Before cleaning, use a clean soft paint brush (1 inch wide brush is better) and dry compressed air with a pressure of about 0.1Mpa [I .e. 1kg/cm2] to remove dust on the circuit board.

2, cleaning can be used to wash the circuit board special circuit board cleaning agent (commonly known as washing water), this liquid can be bought at a special store. If there is no cleaning agent for the circuit board, the following operations can be carried out: (now we generally do not use the cleaning agent for the circuit board) first rinse with tap water, pay attention to the soft water flow, not too strong, brush carefully and lightly with a soft brush while flushing, both sides of the circuit board are the same.

3. Then use a soft brush with neutral soap to carefully and gently clean every part of the circuit board, especially the inside and bottom of jumper plugs, slots (CPU slots, AGP slots, PCI slots, memory slots), the bottom of IC sockets, the bottom of north-south bridge chips, BIOS chips and other IC chips, and the bottom of large capacitors. During operation, care should be taken not to tilt small capacitors and other components installed upright; if it is found that the soap foam is dirty, it should be rinsed with water and then scrubbed with soap until the soap foam is white.

4. Then slowly rinse the circuit board thoroughly with clean water. Note: Soapy water must be thoroughly washed clean.

5. After washing, dry compressed air with a pressure of about 0.1Mpa [I .e. 1kg/cm2] is used to blow away water droplets, especially the inside and bottom of jumper plugs, slots (CPU slots, AGP slots, PCI slots, memory slots), the bottom of IC sockets, the bottom of north-south bridge chips, BIOS chips and each other IC chips, and the bottom of large capacitors, etc., should be purged from different directions, strive to blow all the water droplets in the gap clean. If you don't have compressed air, you can use a rubber hand pump with a watch repair major or a camera repair major, but this stuff can be tiring.

6. Wash the circuit board again with a little secondary distilled water or anhydrous alcohol (let the side with the welded components face up, place the circuit board obliquely, and use a clean oil brush of size 10~12 to clean it from top to bottom with anhydrous alcohol). Carbon tetrachloride is more effective, but it is toxic and must be used with care and should not be used unless necessary. The use of carbon tetrachloride is generally not recommended.

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