Keyboard faults can be caused by several reasons:
The presence of oxides on the surface of the contact pads of the buttons and metal membranes. It occurs either shorting the oxidized buttons (as a result of which the entire keyboard does not work), or isolation between the contact pads and pressing (closing) membrane (the corresponding buttons do not work). This defect is eliminated by rezing the film holding the metal membranes and the cleaning of the contact pads of the buttons and the membranes from the oxides. As a rule, the keyboard starts working regularly;
- Faulty Emif-filter (if provided for the phone). Checked by calling by multimeter according to the electrical circuit diagram. Damage to the EMIF filter occurs mainly when exposed to moisture. The oxides accumulated under it (and this BGA-housing) shove the filter conclusions and thereby the keyboard module bus. As a result, the entire keyboard or part of it does not work. In another case, the filter conclusions are destroyed and the keyboard bus circuit is in the cliff. It is eliminated by replacing the Emif filter to a new one, while it is necessary after dismantling the faulty filter thoroughly remove the residues of the oxides and study the contact sites for damage. After replacing the filter, the keyboard starts working correctly;
- The cable of the keyboard module is damaged (if it is structurally embedded as a removable module). It happens with strong damage to the phone body as a result of drops or with an inept / incorrect phone disassembly process. Eliminated only by replacing the keyboard module. It is allowed to restore damaged loop conductions by proper wire. This repairs It is done for considerations of the expediency and physical possibility of such a type of repair, as well as under the condition of the normal operation of the loop reduced by this method.
- The failure of protective varistors and / or stabilion assemblies, which are set parallel to the keyboard tires relative to the mass (body, GND). Installed in most phones, especially the Samsung brand. The presence and location is specified according to the electrical principal scheme. It occurs mainly closing data of elements as a result of moisture. In most cases, these items are simply removed and the keyboard begins to work properly, but their replacement is desirable.
- closures of the side buttons (volume adjustment, camera shutter, and the like). Often, when moisture gets into the phone, the stop buttons begin to sneak. If the buttons are made in the form of a remote loop, it is convenient to perform diagnostics by temporary exhaust and subsequent keyboard performance. If each buttons are made each in a separate case and soldes on the fee, then, if possible, you need to disappear one of the workers (not enclosed!) Connections and check the keyboard operation. With a positive result, a faulty button is replaced with a new one. If the keyboard on the premature does not work - the button circuit is restored and the same diagnosis is made with the following buttons.
If the phone itself is enabled when inserting a battery and / or cyclically turns on - turns off - the reason is the closure of the power button or the varistor in its chain. Oxides can also be triggered in the keyboard module or inter-spot plume connectors (for folding / sliding phones).
Keyboard faults can be caused by several reasons:
The presence of oxides on the surface of the contact pads of the buttons and metal membranes. It occurs either shorting the oxidized buttons (as a result of which the entire keyboard does not work), or isolation between the contact pads and pressing (closing) membrane (the corresponding buttons do not work). This defect is eliminated by rezing the film holding the metal membranes and the cleaning of the contact pads of the buttons and the membranes from the oxides. As a rule, the keyboard starts working regularly;
- Faulty Emif-filter (if provided for the phone). Checked by calling by multimeter according to the electrical circuit diagram. Damage to the EMIF filter occurs mainly when exposed to moisture. The oxides accumulated under it (and this BGA-housing) shove the filter conclusions and thereby the keyboard module bus. As a result, the entire keyboard or part of it does not work. In another case, the filter conclusions are destroyed and the keyboard bus circuit is in the cliff. It is eliminated by replacing the Emif filter to a new one, while it is necessary after dismantling the faulty filter thoroughly remove the residues of the oxides and study the contact sites for damage. After replacing the filter, the keyboard starts working correctly;
- The cable of the keyboard module is damaged (if it is structurally embedded as a removable module). It happens with strong damage to the phone body as a result of drops or with an inept / incorrect phone disassembly process. Eliminated only by replacing the keyboard module. It is allowed to restore damaged loop conductions by proper wire. This repair is carried out for considerations of the expediency and physical possibility of such a type of repair, as well as under the condition of normal further operation of the loop reduced by this method.
- The failure of protective varistors and / or stabilion assemblies, which are set parallel to the keyboard tires relative to the mass (body, GND). Installed in most phones, especially the Samsung brand. The presence and location is specified according to the electrical principal scheme. It occurs mainly closing data of elements as a result of moisture. In most cases, these items are simply removed and the keyboard begins to work properly, but their replacement is desirable.
- closures of the side buttons (volume adjustment, camera shutter, and the like). Often, when moisture gets into the phone, the stop buttons begin to sneak. If the buttons are made in the form of a remote loop, it is convenient to perform diagnostics by temporary exhaust and subsequent keyboard performance. If each buttons are made each in a separate case and soldes on the fee, then, if possible, you need to disappear one of the workers (not enclosed!) Connections and check the keyboard operation. With a positive result, a faulty button is replaced with a new one. If the keyboard on the premature does not work - the button circuit is restored and the same diagnosis is made with the following buttons.
If the phone itself is enabled when inserting a battery and / or cyclically turns on - turns off - the reason is the closure of the power button or the varistor in its chain. Oxides can also be triggered in the keyboard module or inter-spot plume connectors (for folding / sliding phones).
Why buttons do not work on samsung Phone? The answer to this question will be interesting to many, because mobile owners are often faced with a similar problem. To restore the performance of your phone will help the masters of our service center.
Why doesn't the keyboard work?for several reasons. Consider possible options:
1. The Samsung buttons stop working,if the buttons substrate faults. It happens like most often when the liquid falls into the middle of the device. As a result, the buttons are oxidized and not react to pressing. In order for the device again earned, it is necessary to replace this component to the new one;
2. Do not click on Samsung buttons,if the keyboard control microcircuit is faulty. It fails from moisture from entering or from impact. In order to keys We earned again, it is necessary to replace the microcircuit to the new one;
3. In most cases repair Buttons and Whole Keyboard on Samsungit is produced if moisture falls into the apparatus. In this case, you must immediately dry and clean the mobile. If this is not done, there is nothing strange if the buttons stop working on samsung.It is not worth tightening with repair, even if the cellular has earned again, since the oxidation process goes for quite a long time and you cannot be sure that the device will not let you down at the most inopportune moment. The longer the fluid goes from the moment of entering the fluid, the harder it is to restore the full functionality of the phone.
SAMSUNG well pressed buttonsalso after falling or strongly hitting. In this case, even a complete suspension of the cellular may be needed. In order to renew his work, it is best to seek help in our service centerwhere diagnoses and determine the cause of the breakdown.
Most often we are treated with a problem when sAMSUNG power button broke.Naturally, it comes out of order, most often as a result mechanical damage. If it fails, turn on the phone to become impossible. We have sAMSUNG (POWER) It is carried out quickly and efficiently. At all, it is not necessary to independently repair the cellular, since, sobering the phone, an inexperienced person does not focus on how to fold it right. As a result, other details come out, which complicates the repair process.
What to do? Output:Do not work the Samsung keys and what to do?
If, due to circumstances, you encountered a problem - does not function keyboardor at least one of its component, such as, for example, sAMSUNG sound volume button does not work,immediately come to our service center. Replacing buttons on Samsungfor us, this is a simple task.
Only here:
Diagnostics Samsung It is performed completely free. In most cases, this happens in the presence of the client;
The warranty is made entirely to the entire device at any repair, and not just a replaced part;
After repair, the device passes free quality control;
Discounts for repair;
Spare parts are only original. We suppliers of spare parts for the whole of Russia and because of this, the price of repairing is cheaper;
After the first repair, you are issued a Customer VIP card for a discount from 10% to 40%.
An example from life:Girl dropped Samsung.on asphalt, after which the switch key stopped responding to pressing. SAMSUNG button repairshe decided to entrust our specialists. Within 20 minutes, we have diagnosed and determined the cause. SAMSUNG button replacementthe new one took just a few minutes. After all, the girl received a guarantee for the entire device.
Stock! By the end of the month with any repair ultrasound cleaning for free.
