How to open the cover of Samsung A 20

How to remove the back cover on a Samsung Galaxy Tab 2 P3100

This tablet caused a real sensation, and it was even called the “iPad killer”. Many of those who became the proud owner of the device are interested in how to remove the back cover on the Samsung Galaxy Tab 2 P3100.

Is it possible to do this, and how safe is it? Our article will answer this question.

A little about the characteristics

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    The answer to the question of how realistic it is to disassemble this Android tablet is in the affirmative.

Of course, it is best to entrust the disassembly to a specialist and not engage in amateur performances, but there are still invariably many who want to try their hand.

  • The tablet has a collapsible design, and it is quite possible to remove the back cover. You need to disassemble the device, starting from there.
  • The described tablet has very decent characteristics.
  • You can select a 7-inch screen diagonal, a 1 gigahertz processor (especially for multimedia), 16 gigabytes of internal memory, support for micro-SD memory cards (expandable up to 32 gigabytes), 512 megabytes of RAM and an original design.

  • Unfortunately, the main camera is designed for only 3.2 megapixels, and the front one. for 1.3 megapixels. This is not enough for a tablet of this class.
  • The Galaxy Tab is much smaller in size than its main rival from Apple. Its parameters are only 190.1 x 120.6 x 12 millimeters. Whether it is an advantage or a disadvantage, it is up to the users to decide on a case-by-case basis.
  • HOW TO OPEN THE BACK BATTERY COVER ON SAMSUNG A20

    Rear cover removal instructions

    First, we will need to take care of finding the right tools.

    A good choice would be a Philips PH00 Phillips screwdriver, a special metal tool (designed for disassembling cases; if necessary), a plastic spatula tool and a tri-wing Y1 screwdriver (three-blade).

    An ordinary pick for playing musical instruments is also useful as an aid.

    • We look for screws and pry off the plastic cover from both ends of the dock station. There should be two tri-wing propellers underneath. Well, since we have a special screwdriver, it will be very easy to deal with them.
    • Using a pick and a plastic “spatula”, pry the front panel of the tablet around the perimeter, and then separate it from the back of the plastic case.
    • Unlike the process of disassembling a device based on iOS, we do not have to deal with copper clamps, which easily deteriorate.
    • We detach the plastic latches and remove the back of the case of our tablet. By the way, the plastic construction makes it easier to receive wireless communication channels.
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    Finally, we note that repairing the Galaxy Tab is very simple. The battery can be replaced by the user. It will be easy for him to get to all parts of the tablet without using a soldering iron.

    The 3-blade propellers mentioned above obviously serve as a deterrent for all novice craftsmen, but in fact anyone who has a set of good screwdrivers can handle them.

    Disassembly and repair stages

    Disassembling a vacuum cleaner is not as difficult as it might seem at first glance. First you need to unscrew the mounting bolts from the case.

    After that, it will be possible to remove the cover. Having disconnected the wires from the electronic board, we carefully separate the case from the controls. On this, the main part of the disassembly work can be considered completed. Next, we carefully take out the engine and carefully remove it from the plastic case in which it is placed.

    All work must be carried out without the use of brute force so as not to break fragile plastic parts.

    Major malfunctions

    There are not many of them. As a rule, they are quite trivial, but when they occur, disassembly of the vacuum cleaner is required. You cannot do without it when diagnosing faults. The main reasons for the breakdown of the vacuum cleaner are the following:

    • failure of bearings;
    • wear of engine brushes;
    • engine failure;
    • malfunctions in the electronic system.

    Along with the above, there may be other deviations in the work, but they, as they say, lie on the surface. For example, a fuse has blown. In this case, it is enough to replace it with a new one, and the vacuum cleaner will work again.

    We disassemble a Samsung vacuum cleaner with our own hands

    Not many people know how to disassemble a Samsung vacuum cleaner with their own hands. Meanwhile, this is not very difficult. The presence of a special tool and the ability to handle it is often a sufficient minimum for success.

    Dismantling the engine

    Since most of the malfunctions of a vacuum cleaner arise from the engine, it often has to be disassembled for repair.

    This process is not difficult and looks as follows. Using a thin screwdriver, carefully remove the impeller cover. As a result, access to the nut of its fastening opens. By unscrewing this nut, you need to remove the motor brushes and loosen the body tightening screws. It remains to carefully remove the anchor, and you can start removing the bearings. As a result of the work done at the workplace, you should get something like this picture (pictured).

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    A readily available tool is usually sufficient to remove bearings, but sometimes a special puller is required. After disassembly, all parts are thoroughly cleaned of dust and dirt. Particular attention is paid to the bearing seating surfaces and the engine manifold.

    The impeller nut has a left-hand thread. Exceptions are encountered, but very rare.

    Getting ready for disassembly

    Before proceeding with the repair, you need to prepare everything for this. First of all, you need a toolkit. Nothing unusual is included in it: a set of screwdrivers, pliers, a set of heads, an awl, a small hammer. that will be enough. Additionally, you need to have WD-40 fluid, EP-2 or Litol.24 grease, a soldering iron and a clean rag. To ring out electrical circuits, you will need an ordinary tester.

    For those who are engaged in disassembly for the first time, it is advisable to have a camera with them. to record the disassembly sequence.

    Trouble-shooting

    Sometimes it happens that the vacuum cleaner suddenly stops performing its main function. Everything seems to work, and the dust is not sucked in. In this case, first of all, you need to get and inspect the filters. If the filters are clogged with dust, they must be cleaned. If cleaning does not work, the filters must be replaced. Before replacing, you need to turn on the vacuum cleaner without filters, and make sure that the suction power is at the proper level. If it is still small, you will have to inspect the impeller. It may happen that it is completely clogged with small debris.

    At the same time, check the condition of the brushes and the engine manifold. Worn brushes must be replaced and the collector cleaned. The tightness of the hoses may also be affected, especially in the places where they are attached to the nozzles. You should pay attention to this too.

    Advice. The collector can be very carefully cleaned with fine sandpaper or 0.

    The next common malfunction is that the vacuum cleaner does not turn on. There are three main reasons for this:

    • blown fuse;
    • open circuit in the network wire;
    • circuit breaker malfunction.
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    The fuse has already been mentioned, but to check the rest of the faults, you will need an ordinary tester. With its help, you can easily ring the wires and locate the breakage point. Next, a soldering iron is connected to the case and the malfunction is eliminated.

    Before proceeding with the search for wire breaks, you must make sure that the thermal sensor in the vacuum cleaner has not worked and that the motor has not been forcibly de-energized.

    This happens when the vacuum cleaner has been in operation for a long time. No repairs are required here. After cooling down, the performance of the vacuum cleaner will be restored automatically.

    If during operation the vacuum cleaner vibrates or squeals, rattles are heard, then this means that there is a problem with the bearings. They need to be lubricated, and it is best to replace them immediately. The presence of sharp sounds in the bearing assembly indicates the development of its motor resource.

    And the last trouble is that the power wire is not tightened. Repair in this case is also not very difficult. Here the problem may most likely be in the spring. You need to get to the winding drum and inspect it. It is possible to weaken the spring or vice versa, tighten it. If everything is fine here, then you will have to remove the drum and unwind the wire from it (or vice versa, rewind it). This will adjust the tension force of the drum.

    During inspection, it is necessary to check the performance of the pressure roller. Vacuum cleaners of any brand are not immune from such a malfunction, when the engine speed is no longer regulated. In this case, the problem must be looked for in the electronic control unit. It is simply not recommended to repair it yourself.

    The process of disassembling and repairing a Samsung vacuum cleaner is not very difficult. It can be done independently with minimal knowledge of electrical engineering and the ability to handle locksmith tools.