Why does not the Samsung tablet does not charge

Why does not the tablet Samsung Galaxy Tab

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I am dead and does not charge the Samsung Galaxy Tab 2. I’ve already tried it and from the charger to revive and a computer via USB. And he, bastard, in any way, the indicator does not light up, the icon does not show the charge. No signals when I connect the charger, it also does not give out any signal. Charge was good, I could work with it for a long time without recharging. And now here is the problem happened and what to do do do not know. I moved the charger plug, it doesn’t help. Maybe a new charger to buy?

First: If your Samsung tablet has been discharged for a long time and is completely dead, then when you turn on the charger, the charge indicator may not light up for the first minutes. When a fully discharged battery regains its charge, then it will show the indication.

Secondly: a fully discharged battery can be revived only from the charger, to a drained tablet PC charge useless. The current there is very small, charging goes long and at this current the scheme of charge in the tablet just will not work (if the battery is not discharged to 0, and it has a certain charge, then recharge the battery from a computer can. Long, but it will charge.)

So if you need advice. Then connect the native charger to the tablet (not Chinese, but native), and wait for half an hour. If it begins to gain current charge, then all is well. If the gadget does not come to life. Then bring your tablet to any of the service centers “Opora-Service” for repair.

Full discharge of your Samsung tablet

If your device is completely discharged, the charger is simply not able to recognize the battery. So the first thing you should do is put your Samsung tablet on charge for a long time. The charging indicator will not work immediately, sometimes it takes several hours to return the nominal battery voltage.

If you’ve used a non-genuine charger and cord, it’s very likely that you simply don’t have the right power.

And remember that full discharge occurs when you do not timely charge your gadget, that is, when the level indicator shows less than 10%.

Your tablet is not charging

If you have stopped charging your Samsung Galaxy Tab, Lenovo, HTC, Prestigio, iPad, or observe other problems with charging the battery. there are several reasons for this. It may be a failure of: battery charger, cable, port, power controller, battery, or firmware. Repair the tablet when this malfunction at home is almost impossible, due to the lack of special equipment for fault diagnosis, we strongly recommend contacting the service center “MEGATEL SERVICE” in Kremenchug.

So, we should consider the following reasons why the tablet does not charge.

If you have a tablet that does not charge, then the first thing you need to blame is the charger wire. As a result of frequent winding of the cable after charging, the contacts inside it bend, especially where the cable connects to the plug or charger, which causes loss of contact and the cable becomes unusable.

The problem is solved by replacing the microUSB-USB cable. There is no sense in repairing the cable, because it will be cheaper to buy a new one. If you have a one-piece charger (adapter-cable), you need to buy a new one.

Charger adapter

Another reason why the tablet often does not charge. failure of the charger adapter. The reasons for this can be many: a power surge, overheating, poor quality device, etc. д.

As in the previous case, the problem is solved by buying a new adapter. It is not reasonable to repair a broken charger.

There may also be a problem with the battery of the device. If the battery is relatively new, it is likely that a manufacturing defect caused the failure. Batteries at the age are failing because of the loss of capacity due to the natural exhaustion of the limit of charge cycles.

In this case, if there is no warranty, then the problem is solved either by buying a new battery, or repairing the existing battery, which is not very preferable, since after repair its reliability decreases.

Port (connector) failure can also be one of the reasons of disturbance of charging process of mobile computer.

If your tablet has a broken port, then only a specialist from the service center will help in the repair. The port repair itself is quite a solvable issue.

Power controller is a unit that is responsible for the entire power system in the tablet, if it is faulty, but the device battery may stop charging.

Power controller repair is made by a specialist in the service center. It will not take much trouble for the professional technician to repair it.

Firmware (operating system)

As we know, the firmware is responsible for all processes in the tablet. As a result of the firmware error the device may not charge. Quite often this situation is common in those cases where the tablet shuts down on its own, due to low battery, with incorrect completion of the system.

The problem can be solved by restarting the device. When you are sure that the problem is in the firmware, you can perform a factory reset. If this did not help, it is necessary to try to flash the tablet.

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Batteries: Li-Ion, Li-Pol, and rules of their use.

The first experiments on lithium batteries began in 1912, but it wasn’t until six decades later, in the early 1970s, that they first appeared in household devices. And, I want to stress, they were the batteries. Subsequent attempts to develop lithium batteries (rechargeable batteries) proved unsuccessful because of the problems encountered in ensuring their safe operation.

Lithium. The lightest of all metals, has the greatest electrochemical potential and provides the highest energy density. Batteries using lithium metal electrodes are able to provide both high voltage and excellent capacity. But as a result of numerous studies in the 1980s, it was found that the cyclic work (charging. discharge) of lithium batteries leads to changes at the lithium electrode, reducing thermal stability and causing the potential for the thermal state to get out of control. When this occurs, the temperature of the cell quickly approaches the melting point of the lithium and there is a violent reaction with the gases produced igniting. For example, many lithium batteries for cell phones supplied to Japan in 1991 were recalled after they ignited several times and burned people.

Because of the inherent instability of lithium, researchers have turned their attention to non-metallic lithium batteries based on lithium ions. By losing a little in energy density and taking some precautions during charging and discharging, they got safer so-called Li-ion batteries.

The energy density of Li-ion batteries. Typically twice the density of standard NiCd and in the future, with the use of new active materials, it is expected to be triple that of NiCd. In addition to high capacity, Li-ion batteries behave similarly to NiCd when discharged (the shape of their discharge characteristics are similar, and only the voltage is different).

Today there are many varieties of Li-ion batteries, and you can talk for a long time about the advantages and disadvantages of each type, but from a consumer point of view it is impossible to distinguish them by their appearance. Therefore, let us note only the advantages and disadvantages that are common to all types and consider the reasons that led to the emergence of lithium polymer batteries.

High energy density and as a consequence high capacity for the same dimensions compared to nickel-based batteries.

High single cell voltage (3.6 V vs. 1.2V NiCd and NiMH), which simplifies the construction, and often the battery consists of only one cell. Many manufacturers today focus on the use of such single-cell batteries for cell phones (remember Nokia). However, to provide the same power, a higher current must be delivered. This requires a low internal resistance of the cell.

Low cost of maintenance (operating costs) since there is no memory effect and periodic discharge cycles are not required to restore capacity.

The battery requires built-in protection circuitry (which leads to additional cost) that limits the maximum voltage at each battery cell during charging and protects the cell voltage from dropping too low when discharging. It also limits the maximum currents of charge, discharge, and controls the temperature of the cell. As a result, the possibility of lithium metallization is virtually eliminated.

The battery is subject to aging, even when not in use and just lying on the shelf. The aging process is common to most Li-ion batteries. For obvious reasons, manufacturers are silent about this problem. A slight decrease in capacity is noticeable after one year, regardless of whether the battery has been in use or not. After two or three years it often becomes unusable. However, batteries in other electrochemical systems also have age-related changes with deterioration of their parameters (this. especially for NiMH batteries exposed to high ambient temperatures). To reduce the aging process, store a battery that has been charged to about 40% of its rated capacity in a cool place separate from the phone.

The technology of manufacturing Li-ion batteries is constantly improving. Approximately every six months it is renewed and it becomes difficult to assess how well new batteries behave after long periods of storage.

In short, all good things Li-ion battery, but there are some problems in ensuring the safety of operation and high cost. Attempts to solve these problems led to the development of lithium polymer (Li-pol or Li-polymer) batteries.

Their main difference from Li-ion is in the name itself and lies in the type of electrolyte used. A dry, solid polymer electrolyte has been used, which is similar to a plastic film and does not conduct electricity, but allows the exchange of ions (electrically charged atoms or groups of atoms). Polymer electrolyte actually replaces the traditional porous separator impregnated with electrolyte, which is used in lithium-ion batteries.

This design simplifies the manufacturing process, is safer, and allows for the production of thin, arbitrarily shaped batteries. In addition, there is no danger of ignition because there is no liquid or gel electrolyte. With an element thickness of about one millimeter, designers are free to choose the shape, outline and size, up to embedding it in pieces of clothing.

But so far, unfortunately, dry Li-polymer batteries have insufficient electrical conductivity at room temperature. Their internal resistance is too high and can not provide the current value required for modern communication devices and power supply for laptop hard drives. At the same time, when heated

In general, let’s get acquainted with our today’s hero. Here it is, a beauty:

Its life story is such that, apparently, for a long time it was lying idle and as a result there was a complete discharge. Then the owners remembered and put it on charge.

But for some reason, the tablet did not respond to the healing current flows. The battery indicator lit up briefly and then disappeared with the end. All attempts to somehow turn on the device led to nothing.

After that the false conclusion was made that the original charger from the kit broke and a new one was bought. But it could not solve the problem either:

And you just need to turn on the tablet to charge it and leave it for a while. It will seem that nothing happens, but in fact the battery is already gaining the minimum charge to turn on. But this process is not quick.

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Then you should press the power button and hold it until the screen shows the first signs of life. If after a decent time interval nothing has happened and the device is “dead silent”, then it is definitely worth to perform the following basic actions:

  • Clean the contacts in the cable and connector with alcohol;
  • Try replacing the USB cable itself with another one;
  • Replace the charger with a similar one.

Replacement of the cord is understandable for what you need: in case the current one has fallen into disrepair. And oxidized contacts are also quite common for the Samsung Galaxy Tab. So you can read a good experience in solving this problem:

That said, there were still problems with charging, and so the contacts had to be cleaned up a bit. After that all is well and the nasty red cross is replaced with a lightning bolt. It seems that the matter has moved on.

It should also be noted that with a deep discharge you should not try to charge from a computer, because the current is not enough to “revive” the tablet Samsung Galaxy Tab 2:

Other effective ways that can be found on the web is to disassemble the case to disconnect the screen stub. Yes, yes, sometimes it is the only way to get the device out of the deep discharge state.

If all of the above methods do not help, then most likely the problem lies in the hardware. It can be, for example, the battery or its controller. In this case, only a service center will help.

Now let’s talk about the case when the tablet is charging, but for a very long time. This can be the fault of the device firmware, so there is a chance that even at home such “soreness” can be cured by a complete reset of the device:

But this topic is quite vast, so we’ll consider it in the next article. So the essence of the problem, why does not the tablet Samsung Galaxy Tab 2 charge, or very long charges, is disclosed completely?

If you still have any questions, feel free to ask them in the Комментарии и мнения владельцев. And maybe some of the readers know some other effective ways to solve this problem, then share with all. And now another interesting video.

Reasons for not charging Samsung tablet

The reasons why the Samsung tablet stops charging are not so numerous.

The charge does not go for many reasons

The most common cases: battery failure, charger breakage, bad power connector, burnt chip, broken cable. But first I will explain that before looking for a fault in the above causes, it is worth trying to leave the Samsung Galaxy Tab or another device on charge.

And you need to leave it charging for a long time. let the device stay off for several hours. This is due to the fact that if the gadget has not been used for a long time. that’s why it is completely discharged. then in the first hours after connecting the charger, the device does not have enough energy to display it.

Defective battery

Diagnose a faulty battery at home, it is possible only visually. Therefore, carefully inspect the battery of your tablet.

You can take out the battery yourself

If your unit has a removable battery, then turn off the unit and remove the battery. It is important that your hands are dry! Oxidation circles and blistering of the battery case, confirm that the fault lies in the battery.

The battery with such defects can not be used, or over time will damage other parts of the device. On gadgets with a one-piece body without a back cover, you may also notice a battery bloat.

Turn the tablet sideways and look at it from above. If closer to the middle or edge you can see as if something is protruding from the inside, it may just be the battery. I recommend taking the device to a qualified service center and changing the battery.

[info-box type=”info”]An ordinary service center can do it, but sometimes unscrupulous employees charge as for the original battery, but install a fake one. This will not happen in a qualified place.[/info-box]

It is very important to replace the component with an original part. Any low-quality component of the device will not last long, and can ruin other components.

Defective charger

One of the most common reasons why the tablet does not charge. faulty charger.

It is the charging of such tablets as the Samsung Galaxy Note, Galaxy Tab 3 and other models that often fails. Sometimes it is expressed in the fact that the device does not charge properly. several times slower than before.

Always check the charger when you buy it

And if you use the gadget while recharging, it often even runs down. It shouldn’t be like this. This is easy to diagnose. just change your charger. And both the cable and the power supply.

Check the plug directly into the socket, because sometimes a damaged extension cord is the reason why it doesn’t charge.

I do not recommend charging a power-consuming device like a tablet through a USB cable connected to a computer. Also, be sure to use only original chargers. You can buy them at any Samsung brand store.

A problem with the power connector

It is also very common to encounter a power connector problem that causes your device to charge slowly or not at all.

The main causes of this malfunction:

  • Wear of the power connector due to prolonged use;
  • Use of non-original chargers;
  • The clog in the power connector, due to which the contact was lost and the tablet stopped charging;
  • Oxidation of the contacts in the connector;
  • Careless operation.

First turn off the device and clean the connector with a toothbrush and ethyl alcohol. Clean ethyl alcohol is required. You can check it by putting a drop of alcohol on the mirror.

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If after evaporation no spots are left on the mirror surface, then the ethyl alcohol is clean. This cleaning will help remove all dust and oxidation from the connector.

After the ethanol has evaporated, try to connect the charger. If you still can’t recharge your phone, take it to a service center.

Power control chip burned out

The power control chip can burn out for three reasons: a significant voltage surge during connection to the mains, ingress of moisture, very strong overheating.

The last option is rare, because after severe overheating, for which the device is not designed, not only the power control chip will burn.

If you have burned out this part, your gadget can not get a charge. You can’t fix it at home.

[info-box type=”warning”]Important: Some service centers offer to repair the power management chip. Do not agree to this, because a burned chip can not be properly repaired.[/info-box]

Soon after repair, it will break down again. That’s why you only need to replace it with a new component.

Damaged plume

Damaged cable can cause the tablet to take a long time to charge or not to turn on. Particularly I’m talking about the lower flat cable, where the battery power module is located.

Cable is often the reason for no charging

It can burn out due to a power surge or moisture. But in order for the loop to burn out, there must be a lot of moisture, not a couple of splashes. For example, the device fell in the bathtub. Also, the cable malfunctions due to physical damage, when the device was dropped or sat on it. Unfortunately, it is impossible to accurately diagnose this problem at home. The exceptions are the cases described above.

[info-box type=”info”]If you dropped your gadget on such a hard surface like a tile and after that it stops charging. the problem is definitely the breakage of the bottom cable.[/info-box]

Causes

So, provided that there is sufficient voltage in the network, it is worth considering the following reasons why the tablet does not charge.

If your tablet computer is not charging, then the first thing to blame is the charger wire. As a result of frequently winding up the cable after charging, the contacts inside it bend, especially where the cable connects to the plug or charger, causing loss of contact and the cable becomes unusable.

The problem is solved by changing the microUSB-USB cable. There is no sense in repairing the cable, because it will be cheaper to buy a new one. If you have a complete charger (adapter-cable) then you need to buy a new one.

Another reason that often does not charge the tablet. failure of the charger adapter. There can be many reasons for this: a power surge, overheating, low quality devices, etc. д.

As in the previous case, the problem is solved by buying a new adapter. Repairing a broken charger is impractical, because few people will do it, and the price for a new one is not so high, especially for those made in China.

The causes can also include the failure of the battery of the device. If the battery is relatively new, then most likely the cause of its failure has become a manufacturing defect. Batteries age due to loss of capacity due to natural depletion of the charge cycle limit.

does, samsung, tablet, charge

In this case, if there is no warranty, the problem is solved either by buying a new battery, or repairing the existing battery, which is not very preferable, because after the repair its reliability decreases.

Port (connector) failure can also be one of the causes of malfunctioning charging mobile computer.

If your tablet has a broken port, then only a specialist from the service center will help in the repair. The repair of the port itself is quite a solvable issue.

The power controller is a unit that is responsible for the entire power system in the tablet, if it is faulty, but the device battery may stop charging.

Repair the power controller is made by a specialist in the service center. To repair it will not make much trouble a professional technician.

As we know, the firmware is responsible for all processes in the tablet. As a result of a firmware error the device may not charge. Quite often this situation is common when the tablet disconnects on its own, due to low battery, at incorrect shutdown.

You can solve the problem by restarting the device. When you are sure that the problem is in the firmware, you can perform a factory reset. If this did not help, you need to try reflashing the tablet.

If the device takes a long time to charge, it can be all of the above-mentioned reasons: charger adapter, cable, port, power controller, firmware or battery failure. The duration of charging the battery depends on the correct power of the charger, as well as the degree of battery discharge.

REFRESH FEEDBACK PAGE Author:Alexandra 25-10-2021 16 hours. 50 min.Message:Wouldn’t turn on or wouldn’t respond to charging. Forced reboot. The process is started. Slowly, but it turned out that this “go13nook” had as much as 61%. Rebooted again. 35% and charging is normal. Bought it a month ago, rarely used (for work), was completely new (completely packed, as from the conveyor). And that’s how it gave out. All in all, thank you very much)

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