1. Common main faults:
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On-off problems (lines, switches, heating wires), motor problems (hair entanglement, motor damage), rectification bridge problems.
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considerations
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1). The heating wire must not be welded with soldering wire, because the temperature of the heating wire is higher than the melting point of the solder!
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2) When the hair dryer is repaired and installed, pay special attention to adjusting the position of the fan blade and the shell to prevent the fan blade from being stuck. When the fan blade is found to be stuck, the power supply should be disconnected immediately to avoid overheating and burning of the electric heating wire!
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2, the motor does not turn in the hot air, the electric heating wire is not hot and there is no cold wind.
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1). Some hair dryers are equipped with power supply fuses, check whether the fuse is blown, and replace it if yes. Otherwise continue below.
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2). Check whether the power plug and socket are properly inserted and have poor contact.
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3). Check whether there is a dark break inside the power line, and whether the solder joint in the handle is disconnected. (Repair or replace the power cord; Disassemble the handle and re-weld the solder joint)
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4). Check whether the selection switch is seriously oxidized, poor contact or whether it is cracked. (Polish and wipe treatment or replace the new switch)
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3, the motor does not turn in the hot air, the electric heating wire is not hot and there is no cold wind.
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1). Some hair dryers are equipped with power supply fuses, check whether the fuse is blown, and replace it if yes. Otherwise continue below.
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2). Check whether the power plug and socket are properly inserted and have poor contact.
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3). Check whether there is a dark break inside the power line, and whether the solder joint in the handle is disconnected. (Repair or replace the power cord; Disassemble the handle and re-weld the solder joint)
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4). Check whether the selection switch is seriously oxidized, poor contact or whether it is cracked. (Polish and wipe treatment or replace the new switch)
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4, in the hot air motor running, the electric heating wire is not hot, only cold wind blowing out.
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1). Check whether the lead wire of the heating wire is detached or broken
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2). Check whether the selection switch is in poor contact
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3). Check whether the screw fixing the electric heating wire is loose or too much oxidation and poor contact
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4). Maybe the line is short or the heating wire is broken. The former can be connected, the latter is difficult to repair, even if the heating wire is connected, the service life will not be too long (note that the heating wire must not be welded with soldering wire, because the temperature of the heating wire is higher than the melting point of the solder).
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5). If there is no problem with the heating wire, it may be the problem of the diode.
Direct hair dryer flashing light failure reasons:
There is leakage inside the hair dryer, so it will lead to a large amount of static electricity when it is turned on, so that the circuit is connected in parallel, so the alarm light flashes.
The fault is the hair dryer water leakage, millet with the hair dryer flashing light fault, because millet hair dryer internal victory over the phenomenon of water leakage, but the circuit disorder, so it is necessary to clean up the leaking place in time