We repair a hairdryer with our own hands
As a rule, hair dryers are quite often subject to various breakdowns, and you have to buy a new one. The device is not the most expensive, of course - it is quite possible to purchase another hair dryer, but at the same time it is quite simple, and quite a few will be able to restore its performance without much effort.
Principle of operation
All hair dryers, regardless of the brand and type of housing, have the same operating principle - the electric motor drives the fan, which drives air through the heating coils. Usually hair dryers have a heating level switch, providing different thermal modes, - the switch switches the serial connection of the required number of spirals, - the fewer there are in the circuit - the more current flowing - the more heating. Also, hair dryers are equipped with thermal protection that turns off the device when the permissible temperature of the spiral is exceeded. If this protection has worked, be sure to disconnect the hair dryer from the network, because when the temperature drops, the thermostat will restore the electrical circuit - and the hair dryer will work.
Major malfunctions
Troubleshooting involves disassembling the case. It is usually held together with a pair of self-tapping screws and latches on the halves of the case, which are quite easy to break, so you need to proceed with caution. Although there will be no special tragedy with a broken latch - the case may well hold on to self-tapping screws, or it is possible to apply dotted glue in several places during assembly, but quite a bit - all of a sudden it will have to be disassembled.
The smell of burning- quite often occurs when a hair dryer is operating, since the fan sucks in not only air through the air intake, but also the hair, which then gets on the hot coil and, burning, causes an unpleasant odor.
Another reason is also possible - insufficient air flow through the fan. This can be caused by overlapping the ventilation grilles by hand, or clogging of the filter, if one is provided in this model, - hair, fluff, dust, etc. A weak flow can also be caused by slow fan speeds.
Slow fan rotation- This is usually caused by hair being wrapped around the motor shaft, which interferes with its rotation. As a rule, the fan is tightly mounted on the shaft, and it is impossible to remove it for the convenience of hair removal, since it is risky to apply great efforts - fragile plastic can easily be broken. Therefore, it is convenient to use tweezers - gradually pinching off the coiled hair until they are completely removed.
The opposite situation also occurs (much less often) - the fan does not sit tightly on the shaft, as a result, the engine runs at normal speed, but the shaft rotates in the fan housing. The solution is simple - to put the fan on the shaft using a suitable glue.
The air comes out cold- in this case, there may be several reasons:
- Poor contact in mode switch - Remedy depends on switch design. Often open-type flexible elastic contact strips are used - it is enough to bend them correctly or clean the contact points. If the switch is closed - replace it - is inexpensive.
- Broken wiring - the conductor leading to the spirals or switch may well be broken off or fall off at the soldering point.
- Breakage of the heating coil. It will not break off just like that - most likely this is a burnout. It can be restored simply by twisting, but such a connection will not be durable - poor contact will gradually provoke carbon deposits, which will further increase the resistance at this point - as a result, sooner or later, it will have to be repaired again. It is better to do the same twist, but then press it with a copper or brass tube of a suitable diameter (a thin tube from a refrigerator compressor works well). Soldering is useless in this case - the heating temperature of the coil will melt the solder.
- there can be many reasons and almost all of them are easily eliminated - a break in the power cord, no contact in a sliding contact pair at the point where the cord enters the case, a break in the internal wiring, no contact in a switch, etc. The worst thing that can happen is Is the combustion of the engine. If you have something to replace - good (so do not throw out old faulty hair dryers - after all, spare parts), but no - then you really need a new hair dryer - there is little chance of repairing the engine.
