If the hair dryer is not electrified, check whether the power supply is loose, it may also be the solder joint falling off, no power, the ability to disassemble and connect yourself, the general hair dryer is not electrified may be because the solder joint is falling off, check it first, if it is not possible to take it to the repair shop. If the hair dryer suddenly does not work during use, it may be because the temperature is too high, the temperature control device automatically cuts off the power supply, and so on, the temperature can be used, and the hair dryer failure can be seen according to the detection quartet 1. Check that the power supply is connected properly. 2. Check that the switch is on. 3. Smell for scorch. If the switch is on, the power is connected, suddenly stopped, after ten minutes, and can be restored, to prove that the temperature of the hair dryer is too high, the overheat protector (thermostat) is disconnected, it is for safety, so the action, if it can not be restored, it proves that the hair dryer is broken, and the plug may be poor contact.

Tools/Materials

Maintenance tools: multimeter, screwdriver, tape, soldering iron

Methods/Steps

1. In the first case, the wire is burned off or the switch fails, the multimeter buzzer can be used to detect it. replaceable

2. In the second case, the electric heating wire is short-circuited or burned. Under normal circumstances, the resistance value is within 10~100Ω. A multimeter can be used for resistance detection.

3. In the third case, the rectifier bridge is burned out, and the multimeter diode file can be detected, and the forward voltage drop is about 480 volts under normal circumstances. If the detection is abnormal, you can go to the electronic market to buy a diode replacement, and pay attention to the direction of manual welding.

4. The fourth case, DC motor is burned out, the common faults are winding break, brush break, spindle stuck, you can buy the same type of motor on the Internet or Taobao can be replaced.