The decision to disassemble your tablet yourself often comes suddenly: the device has fallen, the screen has stopped working, or the battery is swollen and requires urgent replacement. Unlike smartphones, tablets have a more complex body design, often without visible screws, which makes the dismantling process a real test of patience and accuracy. Self disassembly is a risky step that can either bring the gadget back to life or completely damage it if moved carelessly.
Before you pick up a screwdriver, you need to clearly understand what you are doing. Manufacturers like Samsung, Lenovo or Apple (in the case of the iPad) strive to make their devices as airtight and thin as possible, using aggressive adhesives instead of screws. This means that the opening process will require not only special tools, but also patience, as well as an understanding of the physical properties of the materials from which your Androidtablet is assembled.
In this article we will analyze in detail each stage of the procedure, from preparing the workplace to disconnecting the cables. You will learn what hidden screws to look for under stickers, how to safely separate the screen from the case, and what to do if the battery is tightly glued. The main rule of any disassembly: if you feel strong resistance, it means you forgot to unscrew some screw or unlatch a hidden latch. Do not use brute force to avoid damaging the matrix or motherboard.
Preparation of the workplace and selection of tools
The success of the operation depends 50% on proper preparation. You should not disassemble electronics on a soft sofa or at a kitchen table littered with crumbs. You will need a hard, level surface with good lighting. An antistatic mat is ideal, but if you don't have one, you can use a regular clean cotton cloth. The main thing is to ensure order so that tiny screws do not get lost in the carpet pile.
The set of tools must be specialized. An ordinary kitchen screwdriver will not work, as it can lick off the heads of small screws or scratch the case. You will need:
- 🛠️ A set of precision screwdrivers (phillips PH000, PH00 and flat).
- 🎴 Plastic picks or special spatulas for opening the case (spudger).
- 🔥 Hair dryer (construction or household) for heating the glue.
- 🧲 Magnetic mat or tray for sorting screws.
Pay special attention to quality plastic spatulas. It is strictly prohibited to use metal tools to pry the cover, as they can damage the display or short circuit the contacts on the board. If you don’t have a professional set at hand, you can use an old plastic card, but you will have to change it often, as it will bend and break.
It is also worth preparing isopropyl alcohol. It will be needed not only to clean the contacts, but also to dissolve the glue holding the battery or screen. Regular rubbing alcohol will also work, but it contains water, which is not desirable when working with electronics. Before starting work, make sure that you have tweezers with curved ends on hand - they are indispensable when working with small loops.
⚠️ Attention: Work only in good lighting. The shadow of your hand can hide a microscopic screw or crack on the board, which will lead to fatal errors during the assembly process.
☑️ Ready for disassembly
Initial inspection and search for hidden fasteners
Many beginners make the mistake of starting to pry off the body immediately, without conducting a thorough visual inspection. In modern tablets based on Android manufacturers hide screws in the most unexpected places. Most often they are hidden under decorative plugs, rubber feet or service stickers. An attempt to open the device without removing these elements will lead to breakage of the plastic latches.
Carefully examine the perimeter of the device. Run your finger along the ends and back cover. If you find a small recess or sticker with a warranty seal (which will still have to be broken during repairs), pry it out with a thin needle. Often this is where the first screw is hidden. Also check the SIM card and microSD slot: in some models, for example, from Huawei or Xiaomi, a fastening element may be hidden next to the slot.
There is a common table of typical locations for hidden screws for various brands:
| Brand tablet | Typical location of hidden screws | Type of plug | Difficulty of access |
|---|---|---|---|
| Samsung Galaxy Tab | Under the logo or in the corner of the back cover | Sticker or rubber insert | Low |
| Lenovo Tab | Under the SIM card slot | Plastic plug | Medium |
| ASUS ZenPad | Around the perimeter under the screen frame | Absent (under frame) | High |
| BQ / Digma | Under the sticker with the serial number | Paper sticker | Low |
After all visible screws have been unscrewed, do not rush to pull the cover. Try to gently move it with your finger. If it does not give in, it means that either you missed a screw, or the case is held on by a strong layer of glue. Budget models often use a combination of latches and glue, so it is important to act methodically, checking every centimeter of the perimeter.
Take a photo of the tablet before disassembling to remember the location of the screws of different lengths. During assembly, a long screw in a short hole can pierce the board through.
Technology for heating and opening the case
If there are no screws or they are all unscrewed, but the cover cannot be removed, then your tablet is assembled with glue. This is standard practice to ensure moisture protection and integrity of the structure. To separate the body parts, the glue must be softened. Heating is used for this. However, it is important to observe the temperature regime here: overheating can damage liquid crystal matrix or deform the plastic frame.
Use a hair dryer, setting the temperature to about 80-100 degrees Celsius. Do not hold the hot air stream at one point for more than 5-7 seconds. Heat the perimeter of the device evenly by constantly moving the hair dryer. The plastic should be warm to the touch, but not scalding. If you have a hair dryer, be extremely careful - it produces temperatures of up to 300 degrees and can instantly melt the case.
After warming up, insert a plastic pick into the joint between the screen and the back cover. Start in the corner where the power button is usually located, or where you found the last screw. Slowly move the spatula along the edge, cutting through the adhesive layer. You will hear a characteristic cracking sound - this is normal. If you feel that the tool is stuck, do not press harder, but add a little more heat to this area.
⚠️ Attention: Never use metal knives or blades to open the case. One wrong move can cut through the display cable or damage the polarizer layer, which will make repairs economically impractical.
In some models, such as Google Pixel Slate or old ones Nexus, the screen may be glued to the frame rather than to the back cover. In this case, you need to open the device from the display side, which carries a huge risk of damaging it. Make sure of the design of your specific device by watching video disassemblies of similar models on specialized resources.
What to do if the glue does not give in?
If the glue remains hard after several heating cycles, try dropping a little isopropyl alcohol into the gap. The liquid will penetrate into the structure of the glue and weaken its adhesion, but act carefully so that the alcohol does not get on the electronics.
Disconnecting the cables and removing the battery
When the back cover is removed, the internal structure of the tablet is revealed to you. The main task at this stage is to de-energize the system. The first step is to find the battery connector on the motherboard and disconnect it. This is a critically important step, since accidental contact closure during further operation can lead to short circuit and failure of the power controller.
Cables in tablets are connected through different types of connectors. The most common are ZIF (Zero Insertion Force), where you need to bend the black or white fixing tab up before removing the cable, and press connectors, which simply sit tightly in the socket. To disconnect press connectors, use a plastic spudger, prying up the connector itself, not the wires. It is strictly forbidden to pull the wires - they easily come off the base.
If your goal is to replace the battery, then after disconnecting the cable you will have to remove the battery itself. In 90% of cases it is glued to the body with double-sided tape. To remove it safely:
- 🔋 Pry the edge of the battery with a plastic card.
- 🧴 Apply isopropyl alcohol under the battery using a syringe (if you have access).
- 🖐️ Carefully loosen the battery, gradually increasing the angle of departure.
- 🚫 Never try to pry out the battery with a screwdriver - puncturing the lithium-polymer cell will cause a fire.
When working with the battery, observe the maximum caution. Even slight damage to the sheath can result in electrolyte leakage or thermal reaction. If the battery is swollen, treat it like a bomb: do not press on it or puncture it. After removal, immediately insulate the contacts with tape.
⚠️ Attention: If you find a swollen battery, immediately stop working indoors. Take the device to a balcony or street, as the risk of fire due to physical impact on such a battery is extremely high.
Removing the motherboard and modules
Removing the motherboard is the final stage of complete disassembly. Typically, the board is secured with several screws and covered with a metal shield that protects the main components from electromagnetic interference. This shield can be soldered around the perimeter or secured with latches. If the screen is soldered, you need a soldering iron and braid to remove it, which requires advanced repair skills.
Before removing the board, make sure that absolutely all cables are disconnected: display, touchscreen, buttons, cameras, Wi-Fi module and antennas. Antenna wires often have specific U.FL type connectors that snap off with a vertical upward motion. They are very fragile and easy to break if not handled carefully. Remember or photograph the location of each wire so that when assembling you connect them to the correct sockets.
When removing the board, be careful not to touch small SMD components that may stick out from the back side. In some tablets, for example, from Chuwi or Teclast, the charging connector can be soldered directly to the board, while in others it is connected through a separate cable. Understanding this difference is important for assessing the complexity of repairing the charging port.
Complete power isolation (disconnecting the battery) is a prerequisite before any manipulations with the connectors on the motherboard, otherwise there is a high risk of burning fuses.
Reassembling and testing the device
Assembling the tablet is carried out in strictly reverse order. However, there are some nuances here. The adhesive layer that you open when opened will no longer hold as tightly. You will have to apply a new layer of glue. Special glue B-7000 or T-7000 is excellent for this, which remains elastic after drying and allows you to open the device again if necessary.
Apply a thin strip of glue around the perimeter of the case, avoiding contact with the optics of cameras and speakers. Let the glue dry for 2-3 minutes until it becomes a sticky film, then carefully connect the body parts. After this, the device must be secured with rubber bands or placed under a press (heavy book) for 4-6 hours. Do not turn on the tablet right away - let the glue completely polymerize.
The first turn on after repair is the most exciting moment. Connect the charger and try turning on the tablet. If the screen lights up but there is no image, check the display cable - it may not be inserted all the way. If the device gets hot or does not respond to buttons, immediately turn off the power and check for forgotten screws or extra parts inside the case that could cause a short circuit.
⚠️ Attention: After assembly, check the operation of the touchscreen over the entire area. Sometimes, if you install the screen frame carelessly, the touchscreen can be pinched, which will lead to “phantom” clicks or non-working areas.
Frequently asked questions (FAQ)
Is it possible to disassemble the tablet without a hairdryer?
Theoretically, it is possible if the case holds only on latches. But 95% of modern models use glue. Without heat, you're almost guaranteed to break the case or crack the screen if you try to pry it with a cold tool. Using a hairdryer is mandatory to safely soften the adhesive.
What to do if the tablet does not turn on after assembly?
First of all, check the connection of the battery cable. It often comes off when the lid is closed. If the power supply is OK, check the display cable and the power button. Also make sure that no screws have gotten inside the case and shorted the contacts on the board.
Do I need to reset the settings before disassembling?
From a technical point of view, this is not necessary, since disassembly does not affect the software. However, if you plan to sell the device after repair or are afraid for your data when transferring it to service, a full reset (Factory Reset) will be an extra safety step before starting work.
How to replace special glue for electronics?
It is best to use specialized adhesives like B-7000. As a last resort, you can use thin double-sided tape (3M) cut around the perimeter. It is strictly forbidden to use superglue (cyanoacrylate): it becomes brittle, emits harmful vapors for optics and makes re-disassembly almost impossible without destroying the case.