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Today I'll introduce a small tool used when repairing electronic products - cleaning brush

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The brush is mainly used for cleaning

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Some solder residue on the surface of the circuit board

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Or some oxides corroded by water

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It's better to use the one you see in the screen

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This brush has a wooden handle

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The bristles are pressed into the wood handle by metal

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The manufacturer said that the bristles of this brush is made of pig bristles

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It has good corrosion resistance

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There are also some mobile phone repairers who use toothbrushes to clean the motherboard

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In the last video, we also learned that PCB cleaner is particularly corrosive to plastic materials

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If you use a poor quality toothbrush to clean the motherboard, it may be that some of the plastic dissolved on the motherboard will be more dirty and there will be more residues

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So it is recommended to use this one in the video

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When I bought this brush, the length of the bristles was about 2 cm or more

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We can cut it in half

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to about 1 cm

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When cleaning, the bristles will be harder and the wash will be cleaner

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If it is too long, it will not be clean when cleaning the motherboard. You don't need to cut it too short

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Let's say if you cut to 1 or 2 mm

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If you don't pay attention to the metal shield at the back when cleaning, it may scratch some components on the surface of the motherboard and may even knock it off

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It may also scratch the PCB

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When cleaning the motherboard, the brush can dip into the PCB cleaner which introduced in the previous video

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Clean this surface

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Let's take a look at the side of the surface and you may see a lot of residues such as silicone grease on the surface of the chip. Brush it

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When brushing, use the bristle tip of the brush to rub the surface of the cleaning object

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Don't press hard on this brush

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It won't clean well

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Just rub it with that bristle tip

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That's all about cleaning brush.Thank you for watching.