The middle part of the touchscreen does not work. How to fix it: the sensor does not work on the phone

Components of electronic devices during negligent operation can break. If part of the touch screen does not work on the phone, it can be caused by both the temperature mode of use and mechanical damage.

Repair does not respond to touch screen smartphone or tablet will help competent diagnostics. Sometimes it helps the simple cleaning, combined with disassembling the case. However, if after all user actions, the device does not turn on, it will have to be in service, and this may lead to additional costs.

Causes of breakdown

You can select the following reasons why part of the screen does not work:

1. Oxidation of contacts due to condensate. Moisture, which turned out inside the device, can lead to a complete or partial loss of working capacity. The oxidized contacts cease to respond to processor commands and transmit them to the screen. To eliminate the consequences of fluid entering, you need to disassemble the device and clean internal components. To do this, you can use alcohol applied on a cotton wand or tampon. After this procedure, the phone should be turned on in normal mode.
2. Cracks on the screen surface. Because of the micro-tests of the sensor, it ceases to respond to pressing. There are such damage due to drops or shocks on the screen. Define cracks on the display can be carefully examined by its surface. If part of the touchscreen is covered with cracks, then it is possible to return efficiency using the device.
3. Turning off contacts of the touchscreen as a result of offset. Usually, the lower or top half of the screen does not work. To diagnose contact displacement, you need to disassemble the device and see whether the visual order of symmetry of the components is distinguished. If you see contact displacement, you can try to fix it with a tweezers. In addition, part of the elements is fixed on glue, which can be melted at high temperatures and move contact. In order for the top to be returned to the place, you need to heat the fastening with a hair dryer and return the component to its original position.

Features of operating electronic devices

In addition to the listed breakdowns, electronic devices May begin to work with failures due to the features of the internal architecture. The constraint of the size of the components affects the reduction of their power, if the tablet screen does not respond to touch - this may be a consequence of the device overload a large number of resource-intensive applications. For prevention, you need to start the task manager. Find out what is loaded cPU Devices, and disable extra applications.

Electronic devices have an increased sensitivity of the screen sensors. The situation when the screen of the tablet or phone does not work, can be associated with banal pollution. Putting fat and dust to the surface leads to the fact that the tablet does not react to the touch.

If the screen does not work on the tablet - the most better decision will attribute it to the diagnosis in service center. For most models, there is a very long warranty that will allow additional cost to replace the device to another device without defects or return the money. If the case is not a warranty, it is possible to just buy a new gadget and subsequently more careful to it.

Video overview of the reasons for the screen breakdowns

Unlike its progenitors, modern smartphones Managed using touchscreen and several auxiliary buttons. Therefore, it is difficult to imagine the situation worse than the one when the screen does not work on the phone.

It is manifested in its full inoperability, loss of part important functions or random sensor responses. It is especially unpleasant when the black screen of the phone caresses the user at the most inappropriate time.

There are several reasons why the phone has a black screen:

• the device fell;
• a chip came out;
• flew a binder loop;
• inside the device got moisture.

Understand immediately why the phone screen does not work, it is almost impossible. The exception is only explicit damage that led to the appearance of cracks or deformation of the housing. But first things first.

Phone fell

To bring out the display, just one fall in the gadget with a small height. The greatest risk represents a collision with asphalt or rocky soil when the blow falls on a specific part of the protective glass.

If after a similar one, the user no longer works, the glass could crack on the machine, resulting in damage to the touchscreen together with the display or could jump out the loop. It will be reasonable to attribute a gadget for diagnosis to specialists, be sure to notify that you dropped it.

Screen control circle

Another extremely common phenomenon becomes a failure of a graphic chip. The display stops receiving information from the device and no longer shows the images. To identify this problem at home is extremely difficult. In this case, all components must be completely replaced. It will not be possible to produce this operation if the device crashed into smithereens.

Wear or disconnection of the loop

Compared to most hardware components, the loop can be replaced without additional device payroll. Usually, a solution to such a problem takes several hours, even when the train completely broke.

It is possible that the display no longer shines, not due to a broken loop, but because of its disconnection from the main board as a result of a strong impact. Repair work Take just a few minutes, the cost varies depending on the complexity of the internal gadget device.

Moisture and fluid getting into the phone body

One of the worst options, why the screen does not burn, can be a contact of the hardware with moisture. Whether it is a couple or a few drops of liquid, they can provoke the destruction of contacts of the board, arrange short circuits Or show yourself from the specific side when the sensor does not respond to your touch or divide the image into several zones.

The solution to this problem will depend on the amount of oxide formed. Tightening with repair, careful cleaning may not be enough and will have to resort to replace damaged modules.

Elimination of oxide

Fighting with oxide, maybe on their own. Immediately after entering the moisture gadget, the device is recommended to fully disassemble and check it for the formation of electromechanical corrosion. The affected area is treated with 96% medical alcohol, for better effect, use a toothbrush moistened in alcohol, dry the fee.

Immediately it is worth warming that such personally interference is capable only to aggravate the state of the smartphone. It is better to give the apparatus to masters, where it is treated with water-repellent solution and will provide high-quality flushing with an ultrasonic bath. Surride it in thermoshkafe at a certain temperature. To say exactly whether the device can be saved, it is often impossible because of the extensive damage to the hardware board.

Advantages of specialized service centers

An obvious advantage is the complete diagnosis of the device, followed by the replacement of the details failed. In contrast to these manipulations at home, the risk that the master will attain an important node by negligence comes down to a minimum.

Additionally, you will receive a guarantee for the entire device, and not on a separate item that has been subject to replacement. As items for replacement, only use original spare partswithout using Chinese low-quality analogues.

How to try to eliminate the problem yourself, it is better to immediately contact the masters that have experience in restoring mobile devices and the tools you need. Especially, this is relevant for those who need an urgent screen replacement.

Conclusion

The display of a mobile device is very fragile and can suffer not only as a result of a strong impact, but because of the moisture in it. Save your device without using special tools becomes almost impossible, and in most cases, an inexperienced user intervention, leads to full damage to the hardware or individual modules.

Video

Modern mobile devices cannot be imagined without touch screens. Therefore, decide what to do if the sensor does not work on the phone, it is necessary only after studying the events that led to the breakdown. The screen is the main part of modern smartphones, without which they lose all functionality.

In order to find out why the sensor does not work on the phone, you will need to carefully examine the smartphone. Sometimes the problems in the phone are visible to the naked eye, for example, if the screen is broken, and in some cases, the performance can be lost without reasons. Moisture entering, rough mechanical impact and much more can affect the condition of the apparatus.
If the source lies in the software failure, then the situation may be observed when the gadget reacts incorrectly to your touch. There are such problems often because of the action of the host itself, which by negligence or inexperience, made changes to the operation of the system.

Typical touch screen faults

The most common reason for which the touchscreen does not work is mechanical damage. Blowing and other impacts can lead to negative consequences. The most neutral will be chips, seriously problems will appear in the formation of a "cage", in which the device can continue to function.

Since modern smartphones are quite fragile devices, even after falling from the height of human growth, it stops working. If the device continues to function, and damage is applied in the form of formation of slots in the case or its deformation, cessation of the work of the screen, then it is necessary to contact a specialist for repair work as soon as possible.

Another popular cause is moisture. Despite the fact that the device looks like a monolithic device, it has small gaps and gaps through which the fluid hits the main fee.

Moisture and fluid getting into the phone body

Moisture getting into cellular mobile leads to the beginning of the contact oxidation process and fee. If the gadget fell into a similar situation, then it is not necessary to disassemble the smartphone without much. The first thing to be done is to dry the device. If the drying did not give the result, it should be attributed to a specialized repair center, which is especially concerned with expensive models, the intervention in the internal scheme of which leads to irreversible consequences. During the repair, you can use cheap replacement of the device that will receive calls and SMS.

Elimination of oxide

In some cases, after the moisture fell inside the gadget, after a certain time it will start to work, but poorly or incorrectly. In this case, you can try independently eliminate the oxide, which occurred when contact with the liquid.

To do this, you will need a tool with which the oxide will be removed (card from plastic, screwdriver, and so on). Also necessary: \u200b\u200balcohol, toothbrush, eraser and napkins. Before analyzing the smartphone, you need to get acquainted with the instruction that can be found on the Internet.

The cleaning procedure should pass carefully, since any awkward movement can lead to an additional breakdown. The disassembled gadget must be folded onto a sheet or a napkin in such a way that it can be easily assembled, as in the drawing. Every place you need to wipe with alcohol, eraser and flush with a dry napkin.

If traces of rust were found, it is eliminated with a toothbrush. The place is processed with alcohol, the remaining corrosion is removed by the eraser.

It is especially difficult to have in cases where the reason has become a sweet drink. The impact of such a mixture has a chance to derive a gadget, and without the intervention of a mining specialist will be impossible.

Spain display

If the display has occurred without damaging the screen, it is necessary to just thoroughly wipe the sensor with a cleaning fluid, then remove the remaining moisture with a dry cloth. To save the display it is recommended to use protective filmwhich is easy to glue and removes in case of contamination.

Plurif damage

Damage to the device of the device is one of the reasons for a breakdown that cannot be eliminated at home. Therefore, if the sensor sometimes works incorrectly, it is worth contacting a specialist who can with the guarantee can restore the device's performance.

Software failure

1. Reload the smartphone. In some cases, the changed settings of the software will not be applied after rebooting the system.
2. Take advantage of the built-in program for testing the sensor. To do this, you need to enter a combination that is unique to each brand apparatus.
3. Check the temperature temperature and place the machine into favorable conditions.
4. Check the operation of the memory card and SIM card.
5. Download the gadget in safe mode.

In some cases, the problem can be solved by these simple ways. If attempts did not give any fruits, then it is necessary to turn to the masters.

What if the phone fell and part of the screen does not work, although everything is going on? We will analyze an example of repair on the MEIZU M2 Mini phone model. Possible reason The fact that a microcrack was formed on the display (the owner of the phone said immediately - "fell, no sensor does not work). To confirm the guesses, it is necessary to diagnose the display module, disassembled the device and check everything carefully.

In the photo below, we show that the small part of the screen does not respond to the touch of the finger.

Proceed to the repair of a non-working display

1. The first thing to do is disassemble the phone. To do this, we take out the SIM holder and remove the back cover using a special plastic tool.

2. Gently open the back of the phone (you need to use a plastic tool so as not to scratch the phone), turn off the entire loop.

3. Then it is necessary to heat the device on special equipment so that the glue becomes soft, elastic and we were able to easily remove the display module. Temperature exhibit from 90 to 100 degrees.

4. We apply glue and fasten with special holders, so that the components lay down to each other as close as possible. Leave in this position for 30 minutes.

5. After that, check the work of the phone, we collect it and give a happy customer.

The result of our work: eliminated the cause of the non-operating bottom of the screen on the phone.

And how much does it cost?

The cost of the work amounted to 2 500 rubles, and half a day of time spent on troubleshooting. Agree, not expensive compared to the purchase of a new mobile phone.

To clarify the cost of repairing the disabled display after the fall of your device model, call us or write a letter. We provide services for the repair of phones of any manufacturers and any level of difficulty, we have both talented masters and the necessary professional equipment. (3500)

Publication Date: 23 August 2017

Ask a question to Master

Modern gadgets have become an integral part of our lives. The phone is the most common gadget. It is almost every person. Unfortunately, even the most reliable phones can break due to shocks, water or software failures. The most common problem with many users of mobile devices are faced - the sensor does not respond to touch. If the device is still on the warranty, then it is necessary to immediately contact the service center. Otherwise, it is not worth a hurry, because there are cases when the problem can be easily eliminated. The sensor does not respond to touch, what to do in this case? Let's consider all aspects of this problem.

Repair of the phone screen

Before resolving the problem, you must make sure that the reason for the breakdown of your display. This may be mechanical damage, entering the liquid inward the device or software failure. If you are confident that you did not drop the phone or did not shed liquid on it, you can assume that this is a program failure.

Clearing Mobile Phone Screen

You can simply read the display of your device. You do not harm the phone, but improve the connection and, perhaps, the problem will be solved. This method can help if the sensor does not respond to touch. What to do?

We take suitable tissue and liquid to clean the screen. It is better to use a lint-free or any other natural fabric. To clear the display, we will need a means for cleaning points or monitors.

If this method does not help, then it is necessary to move to the following actions. Of course, they can also not help. The true cause of breakage can only be installed professional, but it can decide not every problem.

Program failure, which led to a displays breakdown

If the mobile device display places reacts to your touch, you can try to make Hard Reset. Systems, it full reset Settings. But it is worth remembering that it can help only if the sensor is from time to time it is buggy. After resetting the settings, install the applications that can be cleaned. system registry. This will eliminate errors caused by rAM. Recommended applications - WinFixer and Cleaner4. Unfortunately, the second utility is paid, but has a good functionality. The first program will suit you if you are not sure why the display does not respond poorly to touch, and you are not going to spend money.

All actions should be done without a memory card. There may contain viruses that cause failures in the system. After resetting the settings and cleaning the registry, you must install an SD card in place and check the device with antivirus. Select a complete device check and expect. But after the actions performed, the sensor does not respond to touch. What to do? In this case, you need to proceed to replacing the sensor, since the reason is caused by a non-software failure.

Mobile Phone Display Replacement

The sensor does not react to touch - what to do? If the previous methods did not help, then you need to change the damaged display. Most often it should be done when the device fell, cracks appeared or moisture hit. In the latter case, you may not even notice how the fluid got into the phone, as this can happen due to the change of temperatures. So, condensate, which accumulates in mobile devicewill interfere with normal phone operation. First, black spots may appear when working with a gadget, and in the future the sensor itself will stop responding to touch. In this case, you will need to change the screen.

Repair of the phone screen is not too complex process, the main thing is attentiveness and accuracy. This can accomplish any person. The sensor does not respond to touch - what to do? You must first disassemble your device, but you should remember the sequence of actions so that there are no problems with the assembly in the future. All plugs and latches are removed using a fine item. You will need to carefully remove all the elements from the latch.

After disassembling your smartphone, you must remove the display. It is necessary to check how the display is attached to the matrix. This can be done in two ways: monolithic or separate. This is very important, since when ordering a new screen, this aspect will need to be specified.

The sensor can also be connected to pCB different ways. There is a contact method, while the sensor is simply disconnected, and wired. In the latter case should be very neat.

If you need to respond to the matrix from the sensor, it is necessary to follow such recommendations:

• First, heat the surface up to 60 degrees. This can be done using a regular hair dryer. It is evenly dispersed to warm up so that the glass is not cracked, and the glue is heated.
• Next, you need to find a flat and thin object to easily disconnect the sensor from the matrix. To do this, we simply use the edges and gently raise.

It remains only to attach a new sensor. How to do it? Included, the sensor and glue should go. First we apply special glue, and then carefully attach the sensor.

The cost of the new display

How much is of course different models Smartphones screen cost will be different. On average, to change the display on phones with a diagonal of 4.5 or 5 inches, it will be necessary to give about 700 rubles.

If you do not want to disassemble the phone yourself, you can contact a specialist. For the master asks about 2,000 rubles. Although this procedure is not very complex and can be changed independently. Only to this will need to be suitable carefully and carefully.

Do not work touch buttons

The lower sensory buttons directly belong to the screen and in case of their failure, it is necessary to do all the actions that we have already considered. If the touch buttons do not work, you must first make a complete reset of settings. Next, clean the system registry and check your device for viruses. Unfortunately, if the actions did not help, it will be necessary to change the screen.