Schematic diagram of a technical hair dryer. Hair dryer broken? Repair and job description. Electric hair dryer. Types and device. Work and how to choose Why a scarlet hair dryer blows at the same speed

Repair of any hair dryer begins with its complete or partial disassembly, but before we start this process, let's find the answer to the above question.

Absolutely any hair dryer can be divided into two main elements - a heating element and an electric motor. The heating element is usually a nichrome coil, it is she who heats the air. And DC motors create a warm directional air flow.

Electric motors in hair dryers are 12, 24 and 36 Volt, but sometimes in very cheap Chinese models there are 220 Volt electric motors. A propeller is attached to the rotor of the engine, which provides retraction warm air from the spiral. The power of the hair dryer varies from the thickness of the spiral and the power of the electric motor.

Consider the design of the hair dryer in more detail:

1 - nozzle-diffuser, 2 - body, 3 - air duct, 4 - handle, 5 - anti-twist cord, 6 - "Cold air" mode button, 7 - air flow temperature switch, 8 - air flow speed switch, 9 - "Turbo" mode button - maximum air flow, 10 - loop for hanging the hair dryer.

The body of the hair dryer consists of two plastic halves, a front and rear ring and a mesh. The grid hemisphere is dismantled by a slight counterclockwise turn. The hardest part is pulling out the rear ring where the mains wire enters the base. This ring has lugs with holes and latches. The front ring is removed, although a little easier, but also has two latches on the halves of the body and recesses in the ring (in the photo below, only one protrusion is clearly visible and the ring is worn before it).

the main elements of the hair dryer and the diagram in the photos below:

Hair dryer Rowenta cv8525 works, but does not heat the air

Dryer Rowenta repair and disassembly: First, the front metal ring is removed, then the back mesh hides two self-tapping screws under it, unscrew them and remove the back cover from the handle (on latches). Under the overlay are five self-tapping screws unscrew them.

Inspection revealed a classic violation of contact in the button that turns off the air heating. The contact moved a little and stopped closing the coil heating circuit. The repair came down to correct installation contact position and fusing the top of the plastic stand with a conventional soldering iron

Remington hair dryer disassembly and repair

Job instability. Hair dryer switched off intermittently. First you need to pull out the plugs on the hair dryer handle. You can remove the plugs with a sewing needle or the sharp end of a thin knife.

Under the plugs are screws for a special U-shaped screwdriver. After disassembling the handle, we see - the warm air supply switch (blue), the hair dryer power switch (red). Here it is necessary to inspect everything very carefully in case of a quite probable break in the conductors or melting on the switches.

It is difficult to find a girl or woman who would not use a hair dryer to dry her hair, especially in the cold season. And this is understandable, since long hair dried well at room temperature, it takes several hours, and with the current pace of life, this is a luxury.

Therefore, these devices were, are and will always be in demand. And this is proved by the statistics on the sale of hair dryers as a gift to women on different occasions. It is these devices that occupy one of the leading places, since the thing is necessary and inexpensive.
But no matter how high quality the product is, elevated temperature, high current consumption, and, as a rule, improper operation, often lead to breakdowns. household hair dryers.

Rice. 1. Repairable hair dryer "Startex"

And before buying a new device, you can try to bring an old friend back to life. Moreover, the damage can be minor and easily fixed.

Below, one of the most common breakdowns of hair dryers and how to fix it will be described in detail (using the Startex hair dryer as an example).

Of the tools you will need only those that are in almost every home. The only thing that may not be is a multimeter or some other device that shows the circuit. But for sure, a friend or neighbor has it, and you can ask for it for the time of repair. If, nevertheless, there is no good neighbor or electrician friend nearby, you can buy the cheapest multimeter, especially since there are enough of them on the market now. In the future, it will definitely come in handy, for example, to check a light bulb, battery or mains voltage.

In the photo (Figure 1) there is a hair dryer that has a problem in operation.

It lies in the fact that when turned on at maximum power, it does not react in any way.

Fig.2. We looked inside

The hair dryer itself has three switch positions:

The bottom one is "OFF".
The average is half the heating power.
Top - maximum heating power.

Rice. 3. Three positions of the hair dryer

Most often, a hair dryer is used in the upper position, as it gives the fastest drying. Therefore, it is unacceptable to ignore such a breakdown.

So, to find the cause of the malfunction, it is necessary to disassemble the device. Start with a pen.

Rice. 4. Unscrew the handle of the hair dryer

It has a position switch and two mounting screws for a Phillips screwdriver.

Put the hair dryer on its side, and unscrew these two screws.

Rice. 5. Remove the side of the handle

After removing the lid, you can see its filling.

Rice. 6. Hair dryer electronics

Here are located: a switch, a diode, a capacitor, a zero (common) clamp and a clamp for fixing the cord.

Rice. 7. Common clamp

The zero clamp is located inside the dielectric cap (Figure 7).

It connects: wire from the power cord - of blue color, a black wire that goes further to the heater, and one capacitor lead.

The position switch has three outputs. One common, to which a phase brown wire comes from the power cord.
On the other hand, a diode is soldered to the pins.

If you look at the circuit diagram (Figure 8), you can see that in one of the switch positions, the current flows to the heater through the diode. This reduces the heating power and corresponds to the middle position of the switch.

When the second, or both, contacts are closed, the current passes to the heater coil, bypassing the diode, which corresponds to the maximum power - the third position.

The capacitor serves to dampen the noise generated by the motor in the network. This capacitor can be completely dismantled. Then there will be more space in the handle, and it will not explode when the voltage in the network rises.

When inspecting these components, pay attention to their external state. There should be no damage, soot, breakage of conductors and deformation of the case from the temperature regime.

If all the wires are in place, you need to pay attention to the switch. This is a weak link in the chain, since the mechanical movement of the contacts occurs in it, and when they open, an electric arc forms carbon deposits on their surface.

You can check the integrity of the diode, but in this case there is no need to do this, since at half power, the hair dryer works, which means the diode is intact.

Rice. 9. Checking the external state of the components

You need to check the passage of current through the switch.

To do this, we connect one end of the circuit tester to a common terminal, and the other to the terminals on the opposite side.
But you need to do this at a certain position of the switch.

First, we connect the device where only the diode is soldered, and put the switch lever in the middle position.

Rice. 10. Switch in the lowest position

Rice. 11. Checking the current through the switch

The indicator shows the circuit. This means that the contacts inside the case are closed and this is good.

The switch must be placed in the highest position (Figure 12).

Rice. 12. Switch in the highest position

Rice. 13. Checking the second output

The device does not show the circuit, which means that something has happened to the contacts. Fortunately, the switch turned out to be collapsible. Its upper and lower parts are fastened with two screws.

They must be carefully unscrewed. A screwdriver will help here, and not necessarily a Phillips one. An ordinary straight line, with a small tip, for example, an hour, will do.

The screws are quite tight, so some effort will be required. You need to be extremely careful, the screwdriver is thin and can cause deep injury if it slips off. Therefore, it is better not to put your fingers under the switch.
For convenience, you can remove the entire filling by unscrewing the cable clamp.

Now you can rest the lower part of the case against the table and press the screw with a screwdriver (Figure 14).

Rice. 14. Disassemble the switch

In this way, small screws are quite easily unscrewed. When both screws are unscrewed, carefully remove with two fingers top cover switch.

Rice. 15. Remove the switch cover

Under it is the switch handle, on the reverse side of which a special relief is cut out, thanks to which the contacts are pressed or raised at a certain position of the switch lever.

Rice. sixteen. Internal organization hair dryer switch

A hole is made in the center of the handle for a spring, which, together with a metal ball (Figure 16), provides stepwise switching of modes. When disassembling, make sure that the spring and ball are not lost. It is better to put them immediately, for example, in a matchbox.

The fixed ones are at the top, and the movable ones have a springy structure, due to which, the contacts close if nothing affects them. When switching modes, the "cams" of the lever press on these contacts, and under their influence, they go down and open.

Rice. 17. Hair dryer switch contacts

If you look at the contacts from the side (Figure 18), you can see that the nearest one did not return to its original position to close the circuit.

Rice. 18. We look at the contacts on the side

It is this contact that is responsible for turning on the maximum heating power, which did not work.

Below in the photo, you can see how the contacts work. When you press the far contact, it flexes.

Rice. 19. This is how contacts work

If you let it go, it comes back and closes the circuit.

Rice. 20. Contact returned back

We do the same with the other contact.

Rice. 21. Click on another contact

Down, it is pressed, but does not return back (Figure 22).

Rice. 22. Contact didn't come back

Most likely, a flexible conductor with a contact rubs against the side inner wall of the switch housing and is blocked in the lower position. This is the reason for the incorrect operation of the device in one of the modes.

To return normal work switch, you must perform the following sequence of actions:

Gently squeeze the contact block with "ducks" or small pliers. This will give the contact a freer ride in the groove of the switch housing.
Rice. 23. Compress the block of contacts
Additionally, you need to process the edges of the flexible conductors with a needle file. To do this, the contact pad itself can be removed. This will make it easier to process them.
Rice. 24. We clean the edges of the conductors with a file
Also, with a needle file - we clean the contacts from soot.
Rice. 25. Get rid of soot
We put the contact pad in place.
Rice. 26. We put the site in place
For better sliding, we lubricate the inner walls of the body with lithol.
Rice. 27. Litol on the tip of the incisor
Rice. 28. Lubricate with lithol

Now you can check how the contact progress has improved. Press your finger on the contact, and release it.

Rice. 29. Checking contacts

It can be seen that the contact is now working normally, and nothing interferes with its course.

Rice. 30. Spring

A metal ball, it is better to insert into one of the grooves on the body (Figure 31). So it will not come off the spring when you install the switch knob.

The important thing is which side to put the switch handle, since the correct operation of it depends on it.

Rice. 31. Assembling the switch

When right side determined, we turn the lever so that the center of the spring hits the ball, and not to the side.

Rice. 32. We fall on the ball with a spring

Holding the handle, put on it upper part switch housing.

Without releasing the cover, we tighten the two fastening screws (Fig. 33). Now the switch is ready, and without assembling the hair dryer, you can check its operation in different modes.

Rice. 33. We twist 2 screws back

Since the current-carrying parts are open, switching modes must be done with the power plug disconnected from the mains. And only after making the switch, apply power.

It is extremely rare, but still such a situation happens that the hair dryer does not work, and I wanted to fix it myself. In fact, this is not at all difficult to do, the main thing is to correctly identify the breakdown and repair it, knowing how to do it. Next, we will provide readers of the site simple instructions in pictures for repairing a hair dryer for drying hair with your own hands.

Briefly about the design

Before you want to repair a hair dryer at home, you must at least in general terms familiarize yourself with his device. So, modern model technology may include the following:

electrical cord for connecting to an outlet;
switch or speed switch;
fan;
heating element (spiral);
engine.

As you can see, the design of the device is not at all complicated, so if you want to repair the hair dryer yourself, there should be no difficulties with the repair. Next, we will consider all the main breakdowns that can occur, and under each malfunction we will tell you how to fix it. Of the tools you will need a multimeter, a screwdriver (or an asterisk) and, possibly, a soldering iron.

Possible malfunctions

By virtue of its simple principle work, the following breakdowns of a household hair dryer most often occur:

no power at all (the device does not turn on);
the fan is not spinning or the blades are gaining momentum poorly;
during operation, a burning smell is heard or something sparks in the engine area;
The hair dryer does not blow hot air (only cold air).

No power - check the circuit

First of all, if the hair dryer does not turn on, you need to check the power at the outlet and the integrity of the electrical cord. To do this, you can use an indicator screwdriver or a special tester - a multimeter. About that, and, we talked about in the relevant articles.

If there is power in the outlet, but the hair dryer does not work, carefully review the appearance cord: perhaps it is interrupted somewhere, frayed or notched. The most problematic places of the cord are the place of entry into the body of the device, as well as the junction with electrical plug. If in appearance no obvious reasons for the breakdown could be found, proceed to disassemble the case. It’s not at all difficult to disassemble the hair dryer body with your own hands, the main thing is to find all the fasteners and unscrew them (they can be hidden behind stickers, rubber plugs, etc.).

When you get to internal structure(pictured above), first look at the junction of the electrical cord with the rest of the circuit. Very often, the motor does not start due to the fact that the wire disappears at the bonding point. If in your case everything is exactly like this, the repair can be completed with a simple soldering or twisting of the wires.

Video lesson on the topic - looking for where the food was gone

The cord is good, but the hair dryer still does not work? We carry out repairs further and check the remaining elements of the chain. If you have a diagram of your device model, use the tester to ring out the rest of the elements: fuse, switch and mode switch. It is not uncommon for a household appliance to overheat and shut down due to a blown fuse. It must be replaced with exactly the same characteristics.

By the way, there is a reverse situation - after turning on and drying the hair, the hair dryer does not turn off. This is also the fault of the switch itself!

Another malfunction - the power on / off button does not work. We have already told. Repair in this case is similar - check the breaking contacts with a tester, strip them to metallic color and if you can’t fix the breakdown with your own hands, replace the switch. In the same way, check the mode switch, if the hair dryer does not switch speeds or does not regulate the temperature (for example, it does not work at speed 2), try repairing the regulator or perform a simple replacement.

Repairing the power button

The fan does not rotate - clean it

Another type of breakdown is problems with a fan that does not accelerate. If the hair dryer is not working because the fan is not spinning, disassemble the case and see how clean the blades are. Sometimes the fan does not pick up speed because hair is wrapped around it. For repairs, you just need to perform a cleaning - remove the blades from the shaft, remove all debris and reinstall the fan in seat.
You can see the repair process in more detail in the video instructions below. Some models of equipment have filters that also need to be cleaned.

Complete cleaning of all parts

We eliminate blockage

By the way, if the fan smells of burning when you turn on the fan, then most likely the hair dryer stinks due to heavy pollution. Very often, a thorough cleaning helps to solve the problem on your own at home with minimal!

The air does not heat up - we look at the spiral

Another equally popular malfunction is the burnout of the spiral, which is the main heating element. If your fan does not heat up or heats the air weakly, get to the coil, ring it with a tester and do a visual inspection. You can try to repair a damaged heating element, but most often after a repair (for example, a nichrome thread connection), several months pass and the hair dryer breaks down again. It is better to replace the spiral with a new one so that further breakdown does not occur.

Motor problems

Well, the last, most unpleasant breakdown is when the hair dryer does not work due to the fact that the engine burned out. In this case, during the repair, you can only use the tester to make sure that it is the engine that is faulty. In addition, the smell of burning and sparking in the fan area can be considered signs of a breakdown. You are unlikely to be able to repair the device yourself, so it is better to either replace the engine or take the device to service center.

Electric motors in hair dryers are 12, 24 and 36 Volt, but sometimes in very cheap Chinese models there are 220 Volt electric motors. A propeller is attached to the motor rotor, which ensures the removal of warm air from the spiral. The power of the hair dryer varies from the thickness of the spiral and the power of the electric motor.

Consider the design of the hair dryer in more detail:

Schemes of modern hair dryers

Practical example disassembly of a DELONI hair dryer

the main elements of the hair dryer and the diagram in the photos below:

Hair dryer Rowenta cv8525 works, but does not heat the air

First, the front metal ring is removed, then the back mesh hides two self-tapping screws under it, unscrew them and remove the back cover from the handle (latched). Under the overlay are five self-tapping screws unscrew them.

Inspection revealed a classic violation of contact in the button that turns off the air heating. The contact moved a little and stopped closing the coil heating circuit. The repair was reduced to the correct setting of the contact position and fusing the top of the plastic stand with a conventional soldering iron

Remington hair dryer disassembly and repair

The design and electrical circuit of the hair dryer is not very complicated and will be tough for any beginner in the study of electrical engineering.
So, unscrew the two screws and half the handle.
This hair dryer stopped holding the blower impeller on the motor shaft and was fixed with auto-sealant.
Consider completely its device and possible breakdowns.
The hair dryer consists of two parallel connected (after the switch) circuits.
1. Consistently trace the passage of current through the first circuit from the connection point of the circuits "A" to the point "B":
(point "A" - working heating element "RN" (green) - diode bridge "D1-D4", from which the electric motor "M" receives power - point "B").
2. Second chain:
(point "A" - additional heating element "DN" (red) - thermo-switch (thermocouple) "T" - micro-switch "Vmkr" - point "B").

The three-position switch performs actions in a common circuit in three positions:
1. 0 - the common circuit is broken, the power is off;
3. II - the switch turns on the circuit directly to the network;
Consider circuit No. 1 of working heating with an electric motor.
The heating element is a spiral wound wire with a large resistivity current (for example, nichrome).
The electric motor is supplied with a DC voltage obtained by means of a diode bridge consisting of four diodes.
Let's select two elements of the circuit that are consumers (loads), this is a spiral and a diode bridge (we do not consider the engine, because it is the load of the bridge).
In the circuit, the elements are arranged in series (one after the other), which means that the voltage drop across each of them will depend on its own resistance and their sum will be equal to the mains voltage at the third position of the switch.
We conclude:
The resistance (depending on the material and length of the wire) of the element is calculated so that during normal heating, the difference between the voltage of the 220V network and the voltage drop across this element is equal to the voltage drop required for the operation of the electric motor, i.e. to power the diode bridge.
U network - U helix = U bridge.
If this equality is not observed, work is impossible, i.e. if for some reason the coil burns out, it should be replaced with a similar one with the same resistivity.
If the electric motor fails, we replace it with an identical one.
In the diode bridge, an open or breakdown of the diodes may occur.

Used in everyday life a large number of electrical appliances designed to make life easier for the average person. But any technique tends to fail over time. Repairing a hair dryer can be easily done with your own hands at home, without seeking help from a service center.

A hair dryer is a device that is used to dry and style hair. It consists of the following structural elements:

Engine;
TEN - heating part;
Fan;
Thermal protection;
Power cable;
Regulators (fan speed, temperature, etc.).

The principle of operation of a household hair dryer is based on a low-voltage DC collector motor. In order for the device to turn on, its design uses a special step-down coil, which contributes to a voltage drop to required level. It is installed inside the heating element. With the help of a diode bridge, the voltage is rectified. There is a steel shaft on the engine, on which the fan is mounted (in most cases, it is made of plastic, although now there are professional models with metal blades). The fan can consist of two, three or even four blades.

Photo - hair dryer design

The heating element of the electric hair dryer is presented in the form of a spiral with nichrome wire. It is wound on a non-flammable base, which increases safety when using the device. When plugged into the network, the spiral begins to heat up, and the fan installed behind it blows warm air out of the hair dryer body. To protect against overheating, a temperature controller (adjusted during operation) and a thermostat are used. In addition, any hair dryer has a “cold wind” or “cool” button - when it is pressed, the spiral stops heating, only the engine and fan remain running, respectively, cold air blows from the spout.

Photo - filter

It should be noted that not all appliances have a thermostat. It is designed to control the heating of a block with nichrome at long work devices. For example, it can be a stationary professional hair dryer (used in hairdressing salons). When the coil is heated to maximum allowable temperature, the thermostat turns off the power. After cooling, the contacts are switched back on.

Photo - nichrome spiral

Typical malfunctions of the Bosch LCD hair dryer (Bosch), Valera, Skil, Vitek, Scarlett (Scarlet) and others:

Smells burnt. The smell may come from the spiral, which got hair as a result of careless handling, or during combustion. internal parts scheme;
Hair dryer does not turn on. The reason may be a breakdown of the engine, a broken power cord, a lack of voltage in the network;
Decreased work efficiency. The power of the device depends on the cleanliness of the filter installed on the back of the case. If it is clogged, then the device will start to work with less efficiency;
The fan rotates very slowly. Most likely, something just interferes with him;
Hairdryer Braun (Brown), Philips (Philips) or Rowenta (Roventa) does not heat up. There are several reasons why this happens: the cold air button is blocked, the coil is broken, the circuit is damaged, the thermostat does not work.

Photo - model for drying hair

Disassembly

Before starting repairs, you need to know how to disassemble a Parlux, Saturn, Moser or Jaguar hair dryer yourself. This is not difficult, you just need instructions and a screwdriver:

There are two screws on the back of the case. They need to be unscrewed and carefully removed. In some cases, there are more of them, make sure that all fasteners are removed;
In parallel, you can also remove the cover from the top panel - under it is a fan. It is most often simply pressed against the body, so it comes out without problems if you pry it with a screwdriver;
Under the top panel of the case there is a mode switch and a cold air button. There are several wires on the panel. Which are connected to the contacts of the circuit. For further disassembly, they will need to be removed;
Now you can remove the spiral from the hair dryer head. You need to act carefully, otherwise it may break, take it out only after you make sure that you have removed all the fasteners;
Under the spiral, respectively, is the motor. Most often there is no need to get it, because almost all malfunctions will be noticeable immediately at the place where the engine is connected to the contacts of the heating element. An exception is the need to replace a part, then the repair is overhauled.

Repair

Consider how self-repair is carried out hair dryer Babyliss, Rowenta Brush Activ, Bosh, Remington and others at home. First of all, you need to clean the fan and motor shaft from hair. There are a lot of them there even after a few months intensive use. To do this, you need to remove the back top panel and cut the hair, then simply remove it with tweezers or your fingers. In no case should you wipe the parts with a damp cloth - this will damage the contacts. This is done in any case, regardless of the problem.

Photo - fan

If it smells burnt, then you need to repair the spiral and filter. They can be cleaned with a dry soft brush. Just wipe the teeth of the heating element and clean the filter. Make sure that the contacts do not break during the cleaning process.

Photo - Shoe

If the hair dryer does not turn on, then immediately you need to check the power cable. Most often, it breaks at the base, because during operation, the hair dryer rotates many times in different sides along its axis. If everything is fine with him, then look at the contacts on the spiral. There can be 2, 3 or 4 of them. When the device is dropped or hit, they are sometimes soldered, causing the power to the motor to be cut off.

When the breakdown is related to the fan, then repairing the device is as easy as shelling pears. The first step is to check if the blades are intact. Of course, the efficiency of work will not change too much from their condition, but if cracks or notches are noticed, then it is better to immediately change the propeller. Then look at the shaft. Sometimes small parts or other debris fall into the nozzle of the hair dryer, which block the shaft, and it starts to spin slowly.

Now let's discuss the reasons why a Coifin, Steinel or Lukey professional hair dryer does not heat up a spiral of dry warm air. As we said, there can be several reasons. For example, the cold air button is stuck. The principle of its operation is as follows: when you press the button, the contacts inside the case open, as a result of which the heating coil stops working. If it is open all the time, then the spiral simply cannot start to heat up. If the problem is not in the button itself, but in the contact, then you need to solder it yourself.

The cause of the breakdown may lie in a broken spiral, its repair is a little more difficult to carry out than cleaning. In some models, it is made of low-quality material that breaks easily on impact. If some notches are missing on the base or cracks are visible, it is replaced.

Video: how to repair a spiral in a hair dryer

Price overview

It is not always possible to repair your own home, so many centers provide hair dryer repair services.

It should be noted that not a single workshop will undertake to carry out warranty repairs after independent intervention. Therefore, if you are not confident in your abilities, it is better to immediately turn to specialists.

As you may have guessed, in this article we will consider the option of repairing an ordinary household hair dryer with our own hands. Since you can always take it to the repair shop, try to make it yourself. For repair and diagnostics, we need a dialer, screwdrivers, pliers and an indicator.

To begin with, we do a visual inspection of the hair dryer, to search for visible mechanical damage. If everything is in order, plug the hair dryer into the outlet and determine the nature of the malfunction. In case of any breakdown, we will still need to disassemble the hair dryer for repair. Let's say the hair dryer does not turn on at all and does not show signs of life, then we have a starting point. First of all, you need to look at the power cord and switch on the handle of the hair dryer.

We look at the body and determine what kind of screwdriver we need, there are many options here, an asterisk, a slingshot, curly, slotted, it all depends on the model of the hair dryer. Having disassembled the case, we carefully study the entire filling of the hair dryer and try to understand what where is going and why is it needed. Putting the dryer disassembled and prepared for repair on a flat dielectric surface, we turn it on.

Next, take an indicator screwdriver and see where the ends come power cord. Checking phase arrival indicator, if everything is normal, then turn the plug in the outlet and check the phase on the second wire. If you have established that there is a break in the power cord, then try to find it.

A good way to find a broken cable gently bend and wiggle it so that the places of the cliff are connected and the hair dryer turns on for a short time. Also in the photo are the places where the break occurs most often.

After the power cord, we are looking for a breakdown in the power button according to the same principle. We look where the button has an input and check the presence of a phase, then we look for an output from the button and check it there. Buttons and switches are the main malfunction of household hair dryers, they are not expensive, so do not try to repair them tediously and painstakingly, it is much easier to buy and replace them yourself. Most breakdowns can be determined by visual inspection of the disassembled hair dryer and an indicator screwdriver.

The electric motor of the hair dryer is mainly powered by direct current, which comes from diodes. In order to test the diodes you need a tester. On our electrical website you will find a guide on how to operate the tester and test diodes. It makes no sense to repeat in detail in this article.

We carefully examine the hair dryer spiral and if you find a break in it, then we need to repair it small copper tube. We look at the photo and do the same, do not twist the ends of the spiral together, as they will soon burn out and you will have to repair the hair dryer a second time.

The main breakdowns of the hair dryer

Power cord

Switch

clogged fan

Spiral

In my practice, electric motor breakdowns were not common, and if your electric motor burned out on a hair dryer, then it makes no sense to change it, it’s easier to buy new hair dryer and it is advisable to make a purchase by March 8, so as not to spend money on a gift a second time)))

To any radio amateur, as soon as the information that he understands electronics spreads among his acquaintances, almost all of them will probably turn for help. Indeed, at current prices, even for minor repairs of equipment in the workshop, it is sometimes cheaper and more profitable to buy new thing than to hand over cheap things for repairs. But if you have even a little experience, such minor repairs of household appliances can be done at home without straining. Having practically no tools, using only a multimeter for measurements, spending a maximum of an hour - one and a half times. In general, having only one multimeter from the instruments, and most importantly, knowing how to handle it well, it is already possible to carry out a fairly large number of independent repairs, the most diverse household appliances. Today, as usual, relatives turned to me for help in Polaris for drying their hair.

Experienced craftsmen, after reading this article, of course, will smile, it’s business for half an hour, and you can still have time to drink tea), what an hour and a half, but this article is focused primarily on beginner home craftsmen, and not professionals in their field , in which everything turns out, of course, much faster. I have this repair, and took about half an hour. Minor difficulties arose only during disassembly. After examining the hair dryer, I saw that it used a self-tapping screw with a slot for a Fork type head.

At first I was puzzled, if the self-tapping screw could not be unscrewed, one could forget about the repair. This is with heads for an asterisk or a cross, if necessary, if you tore off the slot, or simply can’t find a suitable screwdriver, you can still roll the option of drilling the head with a drill clamped in an electric drill chuck. But I, fortunately, have two sets of screwdrivers with different bits, and one of the bits from one of the sets came up. When the screw was unscrewed, the case still refused to open. I know from experience that the use of force is not always the correct way out, and if the case does not open with medium force, then there are latches. Then I took out a set of extractors for disassembling the tablets, as I decided not to scratch the case with various metal objects. True, this did not help me much, more effort was required, and it could not have done without the help of a penknife. Finally, the building was safely opened.

Hair dryer diagram

A quick look at the insides of the Polaris showed that no surprises were to be expected. I have already encountered similar breakdowns of equipment, and the diagnosis of the malfunction did not confuse me. The first thing was the power cord rang, it turned out to be intact.

Then he flipped the switch to 3 positions, connecting the probes to the switch contacts. On the screen of the multimeter, turned on in the first sound dialing mode, and then the ohmmeter, some numbers that differed from infinity sometimes flashed. Well, this alone was already enough for me, I determined what the probable malfunction was. The switch contacts burned out, this was a typical malfunction for slide-type power switches. The switch was disassembled without problems.

This switch has 4 contacts and 3 positions. When switching, two adjacent contacts are closed, for example 1 - 2, 2 - 3, 3 - 4. If everything was fine with the contacts, it would be enough to touch these pairs of contacts, with the switch in the appropriate position, and if an audible signal sounds, so the contacts are working properly. If the sound signal does not sound, and even in the 200 Ohm resistance dialing mode, our resistance is not equal to zero, or close to it, then the contacts need to be cleaned.

The procedure is quite simple, it is enough to snap off 6 plastic latches with a penknife, and the switch will be disassembled. Sometimes the case of these switches is metal, in which case everything is also solved simply. With platypuses, and if there are none available, then you can also use a simple screwdriver, bend the ears - fasteners, and the moving part of the switch can be removed. The contacts will be coated with a special conductive grease that facilitates the movement of the moving part of the switch. If at least a little of this grease remains in the switch housing, preferably after cleaning, apply it again to the contacts.

In my case, it was not visible due to the applied lubricant, whether the contacts were burnt or not. I acted simply: I cleaned to a shine, with a flat screwdriver, the surfaces of the movable and fixed parts of the contacts, and applied to the contacts, how much I managed to collect in the lubrication switch housing. Then I assembled the switch, aligning the contacts, and put the position lock in place. The subsequent dialing of the resistance of the switch contacts showed that the problem disappeared, cleaning helped. Then the most elementary thing remained, to assemble the hair dryer in the case, and carry out the final dialing of the hair dryer modes through the power plug. In position (0), as expected, nothing rang.

In position (1), with a diode connected in series, to cut off the negative half-wave, and as a result, reduce the power by half, in the resistance continuity mode at the limit of 2 kOhm, the screen showed readings approximately equal to 600, which also corresponded to the norm. And finally, in position (2), turning on the spiral directly, the resistance was 50 ohms. Unfortunately, I didn’t find a diagram for this device, but I didn’t need it, everything was visible and understandable without it. There was only a diagram for a hair dryer from the same manufacturer, Polaris, but with a 4-position switch. Well, in principle, for people who are at least a little familiar with repairs, this will already be enough, the differences in the schemes are insignificant.

In parallel with the main circuit of the device, apparently in order to reduce the level of interference, a non-polar capacitor was installed. Of course, I think I didn’t discover America for anyone by writing this article, and any person who has knowledge in the amount of a school physics course and knows how to use a multimeter can handle this repair, but I think it will still be useful for beginners. The repair was carried out by AKV.

At least once in a lifetime, every woman is faced with the problem of a hair dryer breaking at the most inopportune moment. , if another working device is ready at the pickup. But often there is no such option, and we urgently have to solve the problem. You can contact the service center, or you can try to fix the breakdown at home. To repair a hair dryer with your own hands, you need to understand the principle of operation of this device.

sooner or later the hair dryer breaks

Design

Different manufacturers offer many models that differ from each other in shape, color and availability. additional features. However, one thing remains unchanged. Whatever hair dryer you buy, their design principle is almost the same, so when repairing, you need to pay attention to the same problems.

First, let's learn how a hair dryer works. The main details of the inside of the hair dryer:

engine,

fan,

heating element,

wiring diagram.

Blow-drying your hair is not healthy, but it's quick.

Wherein circuit diagram quite simple, and there is nothing more complicated than a thyristor. The hair dryer box is found in plastic or metal, but both are fastened with different types of bolts.

Therefore, before proceeding with the repair, prepare right tool. Often there is no suitable screwdriver or nozzle in the house to unscrew the bolt. In addition to bolts, special latches may be present on the case. Be careful - the fasteners are easy to break. Don't pull hard without knowing if you're making the right opening. Sometimes important elements are hidden by a sticker.

Do-it-yourself inspection and repair of a hair dryer

Before starting the inspection of the device, it is necessary to unplug the hair dryer from the mains. When working with any electrical appliance all safety rules must be strictly observed. We are now counting on the reader who has not received technical education, but just ran into a problem and wants to solve it without extra costs and loss of time. Before you start inspecting the hair dryer itself, check that the outlet is working by connecting some other device or table lamp. If everything is in order, and the outlet is working, go to the hair dryer.

The cord can also junk with a professional Philips hair dryer

This is the first thing we pay attention to, and first we check its integrity. Sharp teeth are often the cause of breakage. pet. We examine both the cord itself and the plug. If no problems are visible from the outside, we disassemble the hair dryer and look inside.

Contacts or soldering could loosen and move away. We act as a problem is discovered: we twist or solder, connect the broken ends of the wire and wrap it with electrical tape. It's best if you replace the cord. You can use a whole cord from another device.

Take care of the cord, it bends quite often

Switches

The problem may also lie in the breakdown of the switch. In this case, it is allowed to close the circuit without the participation of the toggle switch until you find a suitable replacement.

In this case, the hair dryer will start working as soon as you plug the plug into the socket. Moreover, having opened the case, carefully examine the inside for deposits or melting points. The charred parts must be replaced, and the soot removed with an eraser, then wipe everything with alcohol.

The fan is covered not only for Daewoo di 6805s

Often in women, especially long-haired women, the blades of the fan are clogged with hair elements, and the hair dryer stops working. To repair, you need to carefully clean the fan blades, filters, motor axis. This can be done either by hand or with a brush.

Spiral broken? Repair manual

With frequent overheating of the device, a breakage of the spiral can become a breakage problem. Most of the time, it just burns out. Upon closer inspection, you can immediately see what the reason is. After detecting a gust of a spiral, you can make a replacement by buying a similar option. Spiral repair is also allowed. You can do this:

twisting the ends together

soldering the torn place,

connect the helix with copper wire or tubes.

It is worth noting that replacing a ceramic element is usually an expensive procedure, so if you are not sure of the correctness of your actions, take the new element and the hair dryer to the master.

Motor fails on hair styling tools

This is the most difficult option in this case, since certain knowledge and skills are needed to repair the engine. After examining the motor, we can conclude: the cause of the breakdown is in it or not.

If, when you turn on the hair dryer, you notice a strong crack or spark, then the motor is to blame. After inspecting the housing, winding and brushes, take the motor to a workshop or find a new one and replace it. After replacement, we recommend lubricating the parts so that the movements are made smoothly, without friction.

Microcircuits

If the problem is not found in the above parts of the device, then it may be hiding in the chip. There are several possible failures here:

a crack in the getinax and a break in the track: we solder this area;

capacitor damage: swollen parts are removed and replaced with new ones;

burnt resistor: darkened elements are also replaced with new ones.

heating controller

This detail protects the hair dryer from overheating. Having broken, it does not allow the hair dryer to turn on at all. AT this case you can either replace the broken part, or remove the regulator from the circuit and make a closed circuit. By plugging the hair dryer into the outlet, you will see if the actions helped or if the problem was in another.

Fancy models are now in fashion, but they also have more breakdowns

Despite the fact that we have reviewed almost all possible breakdowns, there are cases when all of the above is checked, but the hair dryer still does not work. In such cases, it is better to contact the master. Moreover, hair dryers used by hairdressers, that is, the professional line, have complex structure, and it is much more difficult to repair such models. Simple ones and inexpensive options may be disposable and not repairable.

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Nevertheless, we hope that the tips will help you cope with the problem and such a misfortune as a broken hair dryer will not spoil your mood.