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To date, there is no longer a single multi-storey residential building where an intercom is not installed - an electronic lock. This device is quite convenient, since the door to the entrance is closed and residents are not disturbed by noise or noise. strangers, no animals, no homeless people, no smell on the playgrounds and no garbage.

But after prolonged use of this device, sometimes when typing the code, the tongue jams and you have to try to open the lock several times, or voices (yours or the caller) are not heard in the handset. There are times when you click on a call, and it just resets, and it becomes clear that the intercom is not working, so let's look at how you can fix some breakdowns yourself.

How to do it?

In view of the fact that almost all models have the same design, we note that the tube has polarity and therefore, when disassembling, it is necessary to mark the wires. First, consider what malfunctions can be:

To open the door, press the button several times;
The tongue sinks and the lock does not open;
Press the call, and it is reset.

Consider why the intercom does not work and how you can fix it.

In the event that you have to press the button several times, then the switch located under the button (on the board) is not corrected. It is not repairable and therefore must be purchased.

Then they proceed as follows: a thin screwdriver is inserted between the board and the case and the legs are heated with a soldering iron and the microswitch is removed. And for a new part, the legs are first served, then they are inserted into place and soldered.

If the tongue constantly sinks, then the call is also constant, and the door does not open. Because given element presses on the switch, which is responsible for the high-quality operation of the tube, then it should be disassembled by unscrewing the screws.

The tongue is located on the front panel next to the button responsible for opening the door and the toggle switch (turns the handset on and off). The bracket holding the stuck part, during long operation, unbends. Therefore, the tongue moves not only back and forth, but also to the right and left, while it does not always return to its place, even if the receiver is hung up.

It is important! This problem is easy to fix. To do this, melt the plastic, remove the tongue (raise it until it rests on the bracket, and pull it out). After removing the burrs from it, insert it into place, and bring a hot soldering iron to the bracket, after 7 - 10 seconds remove it and press it with a screwdriver (the plastic should cool down). Check the course of the tongue.

Here are some of the main causes of intercom malfunction, but consider another one.

If, when dialing a call, a reset occurs, then the first thing to do is to check if one of the wires on the handset has come off. If everything is fine, then disassemble it and inspect the terminals. In the event that everything is in order here, then the integrity of the coil is checked with a multimeter. In order to understand whether this part is working or not, when measuring resistance, it should be from 40 to 60 ohms, and when you touch the terminals, you hear a click. After that, collect the tube and check it.

Call failure may occur due to the toggle switch, which is located near the button that opens the door. It has latches on both sides, with which it is attached to the panel. In order to remove the toggle switch, use a screwdriver and gradually squeeze out the latch. After that, the movable contact is carefully removed and the collected dirt is cleaned inside and on the contacts, for this, alcohol or vodka is used. After this procedure, the tumbler is assembled.

Conclusion

If it is impossible to fix everything on your own, then where to turn if the intercom does not work? At this time, dial the number of the organization that installed this device. Her phone number is written next to electronic device, on the outside or inside of the door. But remember that the repair will be paid, and in the event that the intercom was installed by the ZhES, then you will not have to pay for the repair.

But whoever installs the electronic lock, re-read the contract, where it may be indicated that the organization itself makes the first repair. If this is not written, then those tenants who signed a contract for the installation and maintenance of this useful device will pay.

To date, most of the entrance doors to the entrances apartment buildings in Moscow and others big cities equipped with intercoms. This modern systems restrictions on access to premises strangers. Thanks to the use of these systems, the entry into the house of those people who do not have the appropriate intercom key or do not know the access code to the door is excluded.

Basically, intercom systems are installed in apartment buildings, the principle of operation of which is identical and the design features differ slightly. Regardless of the type of intercom and its design, its package includes the following main elements:

call block with screen and dialer;
electromechanical lock;
subscriber unit with a voice tube.

The intercom system is an electronic-mechanical mechanism that, for one reason or another, may malfunction during operation. The reason that the device does not open front door can be very different. One of the most common reasons when the intercom does not open the door is the breakdown of the intercom handset. About what kind of breakdowns can be, and how to fix them, we will consider below.

How does a speaking tube work?

The speech tube is one of the main components of a complete intercom system. It is installed indoors together with the subscriber device. With its help, audio communication is carried out between the guest and the owner of the apartment, and it also provides the possibility of allowing access to the house. The design features of the handset of various intercom systems are almost the same. For example, or have almost identical voice tubes, which may differ in design, shape, functionality and materials used.

The main components of the speech tube are:

microphone;
speaker;
electronic board;
connecting wires;
frame.

When a call is made to one or another apartment from the inside of a locked door equipped with an intercom, the owner can make a voice connection with the one who came to visit him using the voice tube. Using this intercom, you can give access to the guest to the room by remotely opening the electromechanical door lock. If the handset is broken for one reason or another, then two-way communication will not be possible, and the ability to open doors from the subscriber unit will also be limited. Below we will consider what main malfunctions can occur, and what reasons can provoke a breakdown.

Possible causes of tube malfunctions and repair methods

The intercom is one of the main elements of a complete intercom system. The situation when the intercom does not function is quite unpleasant and brings certain inconvenience to users. In this case, the apartment owner does not have the ability to control access to housing using his subscriber device. If the intercom device does not function in only one of the apartments, then the likelihood that the voice tube is out of order is very high.

If the speaking tube is broken, you can always replace it with new devices and continue to use the intercom system without any restrictions. But there are a number of breakdowns in which it is not necessary to change the entire intercom handset, you can simply eliminate these malfunctions and continue to use the intercom system without resorting to financial costs for the purchase of a new intercom. There are several main types of breakdowns of this part of the intercom system:

the tongue is broken or sinks;
there is no sound;
To open the door, you need to press the button again.

Let's consider each of them in more detail.

Broken or stuck tongue

In the event that the tongue sinks, until it is pulled out, the call will go on constantly, and it will not be possible to open the door. In order to solve this problem, you should initially disassemble the tube body by unscrewing the screws that hold it.

The tongue is located on the front panel where the door opening button and the tube on / off toggle switch are located. On inside The front panel has a special bracket that holds the tongue, allowing it to move back and forth. During operation, this bracket unbends a little, which is why the tongue begins to move not only back and forth, but also to the left / right. As a result, it disengages from the hook and does not always return to its original position when the tube is hung up. As a result of this, such a breakdown as the retraction of the tongue is observed.

To eliminate it, you should return the bracket to its original position. To do this, you can use a conventional soldering iron, with which the plastic bracket warms up. When it is well warmed up, the bracket is aligned in such a way that the tongue is held by it, and its movement around the sides is excluded. After the plastic has cooled down, the tongue will be fixed and can only move back and forth, providing normal functioning intercom device.

The most common reason is that the open button does not work.

Open the tube body.

Pulling out the fee.
We dismantle the old non-working button and solder a new one.

No sound

If there is no sound when using the intercom handset, then most likely the microphone or speaker is out of order. In order to fix this problem, you need to disassemble the device and check the performance of its microphone and speaker. It is also possible that the switching wires between these nodes have soldered or moved away. If the speaker or microphone still does not work, then you need to purchase a similar part and install it in place of the failed one. After that, the voice tube will function with the same functionality as before the breakdown.

Press again to open the door

The reason for pressing the button again in order to open the door is a failed microswitch (mic). This device is located on the electronic board under the door opening button. During operation, the mikrik may fail, which will exclude the possibility of opening the door using a subscriber device. The first sign that the microswitch is not functioning properly is a popping noise in the speaker when the door release button is pressed. After that, the microswitch will remain operational for some time, although opening the door the first time is unlikely to happen - for this, you will need to press the button several more times.

To correct the situation, you need to replace this microswitch, because it cannot be restored. The cost of the mikrik is low, so repairs will not require a lot of financial resources. After a new mikrik is purchased, you need to unsolder the old one from the electronic board. Since the microswitch is tightly attached to the electronic board, it is necessary to carefully unsolder it and remove it from the contact sockets of the electronic board. After the mic has been removed, a new switch is installed in its place and soldered to the contacts of the electronic board. Thanks to such a simple repair, the call button for opening the doors will function as before.

Conclusion

Since the intercom handset is one of the main elements of the intercom system, it is important that it is constantly in working order. If a minor breakdown occurs, for example, one of those mentioned above, you can fix it yourself, after which you can continue to use the device for its intended purpose. In case of more complex breakdowns, you need to seek help from specialists who service intercom systems. They will be able to quickly eliminate the breakdown, as well as the cause of its occurrence, and if the tube cannot be repaired, they will replace it with a new device. After that, the functionality of the intercom system will be resumed and the user will be able to fully use all its capabilities.

Today, almost all high-rise buildings intercom installed. This device makes life easier by allowing you to open the door at the entrance without leaving your apartment. To do this, special services install communications and control devices. For certain reasons, this technique may fail.

You can contact the service that provides the corresponding service. In some cases, you can try to fix the problem yourself. In this case, you need to understand why intercom does not work. Knowing the cause, it will be possible to eliminate it.

Device Features

In office and apartment buildings, intercoms are most often installed. various types. Today, there are many systems that allow you to control access to the premises. More often, devices fail in apartment buildings. This is explained big amount users who use the system on a daily basis.

To understand why the intercom does not work and how to solve the problem, you will need to study its device in detail. The device must have a subscriber device. It could be a handset or even a monitor. On the other end of the connection is located. On it there are buttons for dialing the number of the apartment.

The signal from the panel is transmitted to the handset. At the same time, it also passes to the control unit common to the entrance, the lock button and the switch. The last device determines the code typed on the keypad. This allows you to send a signal to the desired subscriber. If the intercom user wants to open the door, he sends a response signal to the control unit. In turn, this device unlocks the magnetic lock holding the door.

Varieties

Various factors can explain why the intercom does not work. The causes of a malfunction can be observed in any node. common system. To correct the situation, it is necessary to understand the principle of operation of such devices. There are two main types.

The first category includes digital models. The products of Metacom, Marshal, as well as Proel, Raikman, Laskomex and others are in demand today. The second group includes coordinate intercoms. In our country, in this category, the devices "Visit", "Eltis", "Cifral" are in demand.

The presented devices differ in the method of signal transmission and the device of the communication line. Digital intercoms have a two-wire line for signal transmission. The apartment number is determined using jumpers that are located on the tube. Coordinate systems the call block is connected to the subscriber's control device using a special switch. If there is no documentation for the device and it is impossible to determine which category of devices it belongs to, you need to disassemble the tube. The presence of jumpers indicates that the intercom belongs to the digital group.

video intercom

There is another type of intercoms. It is used in private homes or offices. This is a video intercom. It allows not only to hear, but also to see the visitor. There are several main reasons why intercom not working this category. Most often this is due to incorrect wiring.

The presented system transmits a signal over 4 wires. They are responsible for the audio and video signal. There is also a power wire (transmits 12 V voltage) and a common cable. Each of them is marked with a certain color. If you connect a wire to an unintended socket, the signal cannot be processed by the system. In order not to confuse them, you need to carefully study the manufacturer's instructions.

In some cases, video intercom can work together with access control. In this case, 2 more wires are used for connection. These communications have no polarity. This simplifies their connection.

Typical malfunctions

There are many factors why intercom does not work. Causes can be very different. If the design of the device is quite complex (as is the case in video intercoms), it quickly fails. Any element in the system can break.

Quite often, malfunctions in the area of signal conduction are determined. The line may be broken. If the wires are intact, communication between the boards may be broken. If the sound is too quiet, the contact loop may be gradually moving away. This is observed due to the vibration that the device experiences when opening and closing doors.

If only a certain function does not work, it will be more difficult to determine the cause. There can be many reasons for failure. The approach to repair will correspond to the features of the malfunction.

Who to contact?

Many users of the presented equipment are interested in if The intercom does not work, where to contact. You can report a breakdown to an organization that provides communication services. However, there are other companies that specialize in the repair of intercoms. Their rates are about the same.

If the owner of the equipment has no time to deal with the cause and elimination of the breakdown, he can contact a special service. Calling a wizard and conducting equipment diagnostics are most often free.

Repair cost

If you need to adjust the closer, you need to pay for the service in the amount of 700 rubles. In the event of a breakdown of the tube, which is installed in the subscriber's apartment, it will be necessary to replace it. This service costs about 900 rubles. If you replace the system or its elements, the total cost of repairs can be about 1200 rubles. If necessary, replace the buttons, lock or other elements, the price will be about 1500 rubles. At the same time, proven companies provide an appropriate guarantee for the work performed.

Lock won't open

In some cases, equipment owners report that they have intercom key not working. This item may need to be replaced. However, you should also check whether the lock is magnetized. In some cases, even when the circuit is broken, a small charge remains on the surface. He won't let you open the door. In some cases, the user may think that it was the key that failed.

This is easy to check if there is another device for unlocking the lock. Two or three keys cannot fail to work at the same time. In this case, you will need to turn off the power supply to the device. In this case, the lock will completely demagnetize and open.

To solve this problem, you will need to stick a small strip of tape on the metal plate of the door. This situation arises due to incorrect operation systems. Failure in this case can provoke a power supply, controller, lock. Finding the cause can be difficult without the help of specialists. Therefore, the technique with adhesive tape is simple and effective.

Buttons not being pressed

Sometimes figure it out Why is the intercom not working? happens to be very difficult. However, if the buttons are not pressed, the reason is most often obvious. Such a breakdown is usually found in digital varieties of intercoms. They are installed in apartment buildings. A large number of users may frequently press buttons.

To read information from the front panel, such equipment uses the principle of intersecting light beams. This is quite a sensitive system. When polluted, high loads it can falter. In this case, when pressing the apartment number, an error may occur. The letter E or Err will be displayed on the screen.

If the buttons still work periodically, it will be necessary to carry out a quality cleaning of the surface of the front panel. Perhaps dirt, various debris led to a similar problem. If the buttons are not pressed at all, the processor may have failed. In this case, you can not do without calling the wizard.

Can't answer a call

In some cases intercom handset does not work. In this situation, a signal is transmitted from the central console to the corresponding apartment, but when the handset is picked up, the subscriber cannot answer the call. The signal continues to arrive at the device.

The reason for this may be the deterioration of certain moving parts. When you remove the handset, the switch should operate. In this case, several types of systems can be used. In the first case, to stop the signal and connect the subscriber with the guest, a magnetic reed switch is installed in the handset. In the second, this function is performed by a microswitch.

If such a malfunction occurs, the tube will need to be replaced. Otherwise, the user can disassemble the equipment and remove the failed moving parts by soldering. In this case, you will need to install new parts in the appropriate places. This procedure is also carried out using soldering. It is easier to purchase a new handset and replace the failed equipment yourself.

Handset button not working

One reason why the intercom does not work in the apartment may be a malfunction of the button on the handset. In this case, the subscriber can receive the incoming signal, but cannot open the lock. There may be several reasons.

If the button periodically still opens the front door in the entrance, you may just need to clean the structure from dirt. The button may fall off over time. Plastic, the contacts of this device may wear out over time. This leads to problems with opening doors. The tube will need to be replaced.

However, the reason why the signal is not transmitted to the lock may be interruptions in the communication network. Also, a malfunctioning controller can lead to a similar situation. If neighbors have similar problems, you will have to call the master. He must check the main system and communication elements of the equipment.

Audio problems

If intercom stopped working you can correct the situation yourself. However, this is not always possible. If there is no sound on the handset or there is strong interference, the wire may be connected incorrectly. Terminals may be loose. This situation sometimes occurs if the subscriber pulls hard on the handset with the wire. Contacts can loosen, interference appears.

If there is no sound in the handset at all, the communications of the general network may be broken. In this case, it is recommended to contact a specialist. He will be able to determine with the help of special equipment in which part of the circuit there are malfunctions.

Also, the cause of the lack of sound in the handset may be an incorrect setting of the regulator. You need to find the appropriate lever on the equipment. With it, you can increase the volume of the signal. If after these manipulations the sound does not appear, you will need to contact a specialist. He will diagnose and be able to advise the most correct solution Problems.

No call sound on video intercom

Knowing the most probable causes, Why the intercom in the apartment does not work, where to contact for help, you can quickly solve the problem. However, more complex repairs are required for video intercoms. This equipment also breaks down quite often, even if only a few people use it.

Often there is a situation when a call signal turns on on the screen, but there is no sound. The user can notice that they came to him only by video signal. In this case, you need to turn off the intercom from the network. After 5 minutes, you need to turn it on again. Some models of equipment after that begin to work correctly. In most cases, this error will not appear in the future.

If this does not help, you will need to call a specialist. He will diagnose. If necessary, a certain part will need to be replaced. Fix it yourself similar problem will not work. If the video signal is not received by the device, it may be necessary to carry out a complete replacement of the equipment.

There is no image on the screen

If intercom not working with a screen, there can be many reasons for this. If the video screen lights up when you press the call button, but there is no image itself, you need to check the position of the brightness indicator. If everything is fine with him, you need to check the peephole. In some cases, it becomes dirty or it is specially sealed.

If the screen does not even light up, but there is sound, a serious repair will be required. In this case, you will not be able to deal with the problem on your own. In some cases, you will need to purchase a new intercom.

Considering the main reasons why intercom not working You can try to correct the situation yourself. However, in most cases, it will not be possible to do without the help of specialists.

Systems for monitoring and managing the admission of people to residential buildings have been popular with the population for a relatively long time. During this time, many apartment owners at least once, but faced the problems of failures of this equipment when opening the door.

Some models, including our Digital KL-2, are equipped with a speaker switch that allows you to turn off sound signal when called. This can be useful if you don't want to be disturbed by a late guest with the wrong number, or if you wake up a small child who has fallen asleep during the day.

So, worn or dirty contacts of the button of this switch can also affect the reset of the connection instead of opening the door, and be the cause of this breakdown.

When you pick up the handset, the call is dropped

In normal mode, the call is dropped when we put the handset on the base without pressing the button to open the door lock. Accordingly, the switch is responsible for resetting (turning off the circuit): either a reed switch or one located under the tongue holder. It all depends on the model of the tube.

Most reliable way The solution to this breakdown is to replace the failed switch.

When dialing a subscriber's number, it is immediately reset

The indicated reason may appear immediately after installing the intercom handset in the apartment, if the polarity is reversed when connecting the wires.

Often, an ordinary telephone “noodle” acts as a main wire leading into an apartment, in which both ends do not differ from each other in any way.

In the place where the base is connected to the trunk, there is usually a plus and minus marking, but it is better to mark the wire yourself.

If the polarity is not observed, then immediately after dialing the number, instead of the call sound of the subscriber, a reset will occur. Accordingly, none of the guests, due to a breakdown in the intercom, will not be able to sound a call signal on your handset.

Poor hearing when talking

Here you should pay attention to the speaker and microphone located in the intercom handset. Perhaps they are the cause of poor hearing.

Inside the tube printed circuit board there may be a trimming resistor (it is absent in the Digital KL-2 model), which is directly related to adjusting the balance of the microphone and speaker. Just do not immediately use it to configure. Better remember the initial position of the slider, and then scroll it back and forth a couple of times. After this operation, return it to its initial state.

This will restore reliable contact on the resistor and, possibly, eliminate poor hearing on the tube.

Radio amateurs can also replace the capacitors located on the board next to the trimmer.

So we sorted out all the main malfunctions of the intercom handset for opening the door, which can be fixed on your own.

If you have a handset from an old and unnecessary phone with an ordinary battery, then in five minutes you can assemble an intercom or intercom with your own hands.

The owner of the video, Evseenko Technology, clearly shows this process in his video.