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source:Industry news release time:2022-04-01 Hits: Popular:aromatherapy diffuser direct sales
Among the many types of fans, the USB mini fan is particularly popular. So what should we do if the small USB fan doesn't turn?
1. Prepare all items and materials. Such as: electric soldering iron, solder wire, flux and other materials. In addition, prepare a set of small screwdrivers, some insulating tape, scissors, enameled wire and other items.
2. Small fans all use small motors with brushes. If they don't turn, the probability is that the brushes are burnt, so we need to focus on checking the brushes.
3. During maintenance, you can first remove the 4 screws under the fan with a screwdriver. Then pry open the outer cover against the edge of the gap, and take out the counterweight sandbag inside the cavity.
4. Cut off the internal wires, then disassemble the small motor inside, and then break the burnt brush by hand to make it touch the motor rotor.
5. Solder the copper wire to the tin point of the motor with a tool. Wrap tape around the copper wire to insulate. Connect the other end of the wire to the two pole wires of the fan base. Power on and test the operation of the fan, if it is in good condition, the repair is completed.
The reason why the usb mini fan does not turn
1. The fan is not maintained and lubricated. Lubricating oil should be applied to the rotating shaft part of the fan regularly, otherwise the motive of the fan blade on it cannot be dragged.
2. The fan has been used for too long, causing wear or burnout.
3. There is an overheating circuit breaker inside the fan. If the fan is in use, the coil is short-circuited and the calorific value increases rapidly. At this time, the motor will turn on "self-protection" and stop rotating.
4. When the line is damaged or heated, there will also be problems such as the fan not rotating.
Summary: There are many reasons why the USB fan does not turn. When we carry out maintenance, we need to adopt different methods according to different reasons. In addition to repairing the electric fan by ourselves, it is best to get it from the nearest repair shop. Professional maintenance.
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