1. Turn the motherboard upside down and tin the two pins of a capacitor by surfacing welding.

2. Turn on the 850 welding torch, turn the wind to the maximum, use a fine air nozzle, and set the temperature at about 400 degrees. After the tin is melted, blow holes quickly with an air gun.

3. Turn the motherboard over and insert all new capacitors. After insertion, the capacitor feet extending to the back of the motherboard are slightly broken to both sides to prevent the capacitor from falling off when the motherboard is soldered later.

4. Solder one pin of all capacitors, put one hand under the motherboard, hold down the capacitor, melt the tin of the just-soldered foot, repeat this action to install all capacitors in place, and then solder the other pin.

5. Cut off the excessively long stitches and wash them with washing water.