Disassembling a laptop Lenovo B590 is a task that often arises when an upgrade or repair is needed. This model, released in the early 2010s, has a simple design that makes it an excellent DIY item. However, even such a simple technique requires care and understanding of the sequence of actions so as not to damage fragile cables or the plastic case.
Many users are afraid to start dismantling for fear of losing the warranty or breaking the latches. In the case of Lenovo B590 the situation is slightly different: the warranty on most of these devices has long expired, and the case design is designed to allow the replacement of major components. Proper preparation and the right tools will allow you to safely access the inside of the device.
In this article, we'll take a closer look at each step of the process, from turning off the power to removing the motherboard. You will learn how to properly remove the keyboard, dismantle the cooling system and replace outdated components with more efficient analogues. It is important to approach the process responsibly in order to avoid unnecessary repair costs after an unsuccessful attempt.
Preparation of the workplace and necessary tools
Before you start working, you need to organize a comfortable space. You'll need a clean, well-lit desk, preferably one with a soft surface to avoid scratching the bottom cover of your laptop. It is also extremely important to avoid static electricity, which can damage electronic components, so it is recommended that you touch a grounded metal object before touching the board.
List of disassembly tools Lenovo B590 is minimal, but without some elements the process may take longer or become dangerous. The basic set should include a Phillips screwdriver with a PH1 or PH2 attachment, a plastic spatula for prying up latches and tweezers for working with small cables. Using metal objects instead of plastic spatulas may cause deep scratches on the cabinet and damage to the internal latches.
To store unscrewed screws, it is better to use a magnetic mat or divide them into groups in small containers. In the model Lenovo B590 screws of different lengths are used, and mixing them up during reassembly means risking damage to the threads or the housing. If you are planning to change cooling system, also prepare a new thermal interface, since the old thermal paste often dries out and requires complete replacement.
- 🛠️ Phillips screwdriver PH1/PH2 for housing screws
- 🪜 Plastic spatula for carefully opening latches
- 🔋 Anti-static wrist strap or grounded object for shock
- 💾 Containers for sorting screws of different lengths
⚠️ Attention: Never use metal screwdrivers or knives to pry off the covers and keyboard, as this is guaranteed to lead to chipping of the plastic and breaking the seal of the case.
☑️ Preparation for disassembly
Removing the External Cover and Memory Modules
The first stage of work is to completely de-energize the device and remove easily accessible modules. Unplug the laptop and remove the battery. IN Lenovo B590 This is done by sliding the latches to the side and pulling the battery out until it clicks. Without this step, any manipulation of the internal electronics may result in a short circuit and permanent damage to the motherboard.
After removing the battery, turn the device over and find the access door to the RAM and hard drive. It is secured with one or two screws that need to be carefully unscrewed. By removing the metal hatch cover, you will have direct access to the memory slots and drive. This allows you to perform a simple upgrade without completely disassembling the case, which is often enough to speed up the system.
To remove the module RAM It is necessary to move the metal clamps along the edges of the bar to the sides. The bar will automatically rise at an angle of 30 degrees, after which it can be easily removed from the edges. If you are planning to install a new module, make sure that its type (DDR3) and frequency match the specifications of your motherboard. Do not touch the gold contacts with your fingers to avoid oxidizing them.
The hard drive in this hatch is held on by screws and a plastic slide. By unscrewing the fasteners, you can remove the drive. To replace with a modern one SATA SSD You just need to move the adapter frame from the old HDD to the new SSD. This action will significantly speed up Windows loading and program execution, turning your old laptop into a more responsive tool.
- 🔓 Disconnect the device and remove the battery
- 🔧 Unscrew the screw of the module access hatch
- 🧠 Carefully remove the RAM sticks
- 💾 Remove the hard drive to replace it with an SSD
How to find out the type of memory?|To accurately determine the type of memory, you can use utilities such as CPU-Z, where in the Memory section the type (for example, DDR3-1333) and voltage will be indicated, which is important when purchasing new sticks for compatibility.-->
Removing the keyboard and top panel
The next and most important step is removing the keyboard. In the model Lenovo B590 The keyboard is secured not only with screws, but also with many plastic latches, and is also connected to the motherboard via a thin cable. You need to start by unscrewing the two screws located on the top edge of the case, right behind the screen, which are often hidden under a decorative sticker or simply visible in the openings.
After unscrewing the screws, you need to carefully pry off the keyboard with a plastic spatula. Start at the bottom and move around the perimeter until you hear the characteristic click of the latches coming loose. Do not use excessive force as the plastic may crack. As soon as the keyboard is free, you need to lift it and turn it over to get to the cable connector, but do not pull it right away so as not to break the wire.
By opening the keyboard cable connector lock, you can completely disconnect it from the board. Be extremely careful with the connector lock
it can be snap-on or slide-on. IN Lenovo B590 most often a sliding mechanism is used that needs to be moved to the side. After this, the keyboard can be moved to the side, allowing access to the cooling system and motherboard.
Now you can remove the top plastic panel (palm rest), if this is required for complete disassembly. It is secured with screws that are located under the keyboard and in other hidden places. After unscrewing them, carefully pry up the panel, starting from the corners, and disconnect the cables for the touchpad and power buttons. This stage requires maximum concentration, since the trains are very fragile and easily break with sudden movement.
- ⚙️ Unscrew the screws on the top edge of the case
- 🔨 Carefully pry off the keyboard with a plastic spatula
- 🔌 Disconnect the keyboard cable from the motherboard
- 🖱️ Remove the top panel and disconnect the touchpad cables
⚠️ Attention: The keyboard cable in the model Lenovo B590 very thin and fragile. When disconnecting, hold it only by the hard plastic connector; under no circumstances pull on the wire itself or the foil.
Replacing thermal paste and maintaining the cooling system
The main reason for overheating laptops Lenovo B590 is the thermal paste drying out and the radiator becoming clogged with dust. After removing the keyboard and top panel, you will have access to the cooling system. First you need to unscrew all the screws securing the radiator. Please note that the screws are marked with numbers indicating the order of unscrewing, which must be followed so as not to damage the processor.
After unscrewing the screws in reverse order, carefully lift the radiator. If it sticks to the chip, wiggle it slightly, but don't jerk it too hard. Under the heatsink you will see the processor and video chip. Old thermal paste will most likely look like dry stone. It must be completely removed using a lint-free cloth and isopropyl alcohol until clean metal appears.
Applying new thermal paste is a key part of maintenance. Use a quality paste such as Arctic MX-4 or Thermal Grizzly. Apply it in a thin layer, perhaps in the form of a small pea in the center of the chip, which, when installing the radiator, will itself be distributed over the surface. Excess paste can extend beyond the chip and short-circuit the contacts, so the layer must be even and thin.
After applying the paste, install the radiator in place and tighten the screws strictly in the order indicated on the markings. This will ensure uniform pressure and optimal heat dissipation. Don't forget to also blow out the radiator with compressed air, removing all dust from the fins and fan. If the fan is noisy, it may need to be completely replaced or the bearing needs to be lubricated.
The table below shows the approximate temperature distribution before and after maintenance, which clearly demonstrates the effectiveness of the procedure:
| Component | Temperature before cleaning (°C) | Temperature after cleaning (°C) | Difference (°C) |
|---|---|---|---|
| Processor (CPU) | 95 | 65 | -30 |
| Video chip (GPU) | 90 | 60 | -30 |
| Fan (noise) | High | Low | Quiet |
- 🌡️ Unscrew the radiator of the cooling system in order
- 🧼 Clean chips from old thermal paste with alcohol
- 💧 Apply a new layer of high-quality thermal paste
- 💨 Blow out the radiator and fan with compressed air
Before applying thermal paste, make sure that the surface of the chip is perfectly clean and free of grease, otherwise the paste will not fill the micropores and the cooling efficiency will decrease.
Complete removal of the motherboard
If you need a complete motherboard replacement or repair of a specific component, you will need to remove the entire motherboard. This is the most difficult stage, as it requires disconnecting many cables and screws. Start by disconnecting the battery, if it has not already been removed, and all cables going to the keyboard, touchpad, speakers, and USB ports.
Pay special attention to the power connector. It often has a locking mechanism that needs to be carefully released. After disconnecting all peripherals, remove all screws holding the board to the case. IN Lenovo B590 There are a lot of screws and they can be different lengths, so again refer back to your sorting chart to avoid mixing them up when reassembling.
After unscrewing all screws and disconnecting all cables, the motherboard should be free. Carefully lift it, making sure that it does not get caught on any protruding parts of the case. You need to pull out the board smoothly, without jerking. If the board does not come out, check whether you forgot to unscrew a screw or disconnect a hidden cable, for example, from a Wi-Fi module.
Sometimes the motherboard may be glued to the case with thermal pads or have hard contacts with the ports that need to be slightly jiggled. Do this very carefully. Once the board is removed, you will have full access to its components for diagnostics or replacement.
- 🔌 Disconnect all cables and power cables
- 🔩 Unscrew all screws securing the motherboard
- 📦 Carefully remove the board from the case
- 🔍 Inspect the board for defects
Complete dismantling of the motherboard is necessary only in extreme cases of repair, since most problems can be solved by replacing individual modules without removing the main board.
Assembly and performance testing
Assembling a laptop Lenovo B590 done in reverse order. Start by installing the motherboard by carefully inserting it into the case and tightening the screws. Connect all cables, making sure the locks are fully latched. It is important to check the connections as poor connections can result in unstable operation or no images.
Install the cooling system with fresh thermal paste and secure the radiator. After this, attach the top panel and keyboard, snapping all the latches into place. Install the memory modules and hard drive into their slots, tighten the screws of the hatches. Before closing the case completely, it is recommended to carry out a preliminary check by connecting only the power and screen.
Turn on the laptop and check the operation of all components: keyboard, touchpad, Wi-Fi, sound and video. If the system boots without errors, you can turn off the laptop, install the battery and close all covers. Make sure all screws are tightened, but do not over-tighten to avoid stripping the threads in the plastic housing.
If you hear strange sounds or don't see a picture when you turn it on, turn off the device immediately and recheck all connections. Often the problem lies in a poorly inserted cable or a forgotten screw that interferes with contact. A thorough check at this stage will save you time and stress in the future.
- 🔧 Reassemble the body in reverse order
- 🔌 Check all cables and connectors
- 💻 Conduct a test run without covers
- ✅ Close the case and install the battery
⚠️ Attention: Do not rush to close all covers before checking functionality. If you discover a problem after complete assembly, you will have to disassemble the laptop again, which increases the risk of damaging the latches.
The correct assembly sequence and careful checking of all connections are the key to long and stable operation of the restored laptop.
Do I need to completely disassemble my laptop to replace thermal paste?
No, to replace thermal paste in Lenovo B590 Simply remove the keyboard and top panel. Complete disassembly of the motherboard is required only in case of repair or replacement.
What type of thermal paste is best to use for this model?
It is recommended to use high-quality thermal pastes with good thermal conductivity, such as Arctic MX-4, Noctua NT-H1 or Thermal Grizzly Kryonaut, which will ensure effective heat removal from the processor and video chip.
What should I do if the keyboard does not latch?
If the keyboard does not budge, check that all screws are removed. Sometimes the screws are hidden under stickers. Also make sure that you pry it up carefully with a plastic spatula and not with a metal object, so as not to break the latches.
Is it possible to install an SSD instead of a HDD in Lenovo B590?
Yes, laptop Lenovo B590 Supports installation of 2.5-inch SATA SSD. This is the easiest and most effective way to speed up your device without having to completely replace the motherboard.
How to avoid damage to cables during disassembly?
Remove the cables only after turning off the power and unscrewing the connector clamps. Hold the cable by the plastic connector, do not pull the wire, and avoid sudden movements when dismantling.