How to disassemble Xiaomi RedmiBook 4: open the lid without damage

Xiaomi RedmiBook 4 laptops have gained popularity due to a combination of performance and affordable price, but their compact body often raises questions among users who decided to upgrade components or clean the cooling system. Unlike many budget models of other brands, here the manufacturer used custom mounts and hidden latches, which makes the process of disassembly a non-trivial task.

This article will help you safely remove the back cover of RedmiBook 4 (RMB-4300, RMB-4500 and the like) without the typical mistakes of damaging plastic clips, breaking plumes or losing warranty. We will analyze the official and alternative methods, necessary tools, and provide recommendations for the preparation of the workplace.

Preparation for the disassembly: what you need to know before the beginning

Before you start screwdriver, consider disassembling. Xiaomi doesn't provide user access to the internal components of RedmiBook 4 — it's not a service laptop like Dell Latitude or Lenovo ThinkPad.

• 🔧 Warranty: Opening the case automatically voids the warranty on the housing and cooling system (but not on components unless they are damaged).
• ⚠️ Risks: 30% of self-disassembly cases end in damage to the touchpad plume or battery connector.
• 🔄 Alternatives: For dust cleaning, it is often enough to blow through the ventilation grilles with a compressor (pressure not exceeding 3 bar!).

If you are determined to disassemble the laptop, prepare:

• 🛠️ Setting screwdrivers PH00 and T5 (better-magnetic).
• 📸 Smartphone to take photos of each stage – it will save you if you forget the order of the assembly.
• 🧲 Spin tray (or magnetic substrate) - in RedmiBook 4 12 screws of different lengths!
• 🧴 Plastic mediators (or guitar mediators) to separate latches.

⚠️ Warning: screws under rubber legs have different lengths - 5 mm and 7 mm. by confusing them during assembly, you risk damaging the motherboard!

Step-by-step: remove the back cover

Follow this algorithm to minimize your risks, and do everything on a soft surface (a towel or an antistatic mat):

1. Step 1. Turn off the power, disconnect the charger, and press the power button for 15 seconds to discharge the capacitors, which will prevent short circuits from accidentally touching the contacts.
2. Step 2. Remove the rubber legs Carefully tuck the legs with a flat screwdriver or mediator. There are screws underneath! In the RMB-4300 model, 4 legs, in the RMB-4500 - 6 (two additional ones under the front edge).
3. Step 3. Untwisting the screws Total 12:8 perimeter (length 5 mm) and 4 inside (7 mm). Use the T5 screwdriver with a force of no more than 0.3 N·m. Do not twist the screws completely - leave them in plastic bushings so as not to lose.

Now the most important thing is to disconnect the latches. Start at the corner next to the hinges of the screen.

All screws are twisted (but not removed from the bushings)

Mediators prepared (2 pieces)

The laptop is screened down on a soft surface.

Photo of the current state taken-->

Put the mediators in the gap between the top and bottom of the body and carefully guide them along the edge, alternately releasing the latches. Do not force — if the lid does not respond, check if all the screws are twisted. In the corner near the touchpad is a hidden latch (see photo below), which is often missed.

Common Mistakes and How to Avoid Them

Even experienced users make mistakes when disassembling RedmiBook 4, and here are the most common ones and ways to prevent them:

The touchpad plume is particularly noteworthy, because it's attached to the motherboard with a ZIF-24pin connector and it's locked with a black plastic latch, and if you move carelessly, you can tear the connector off the board, and it costs about 3,000 to 5,000 rubles to repair.

⚠️ Attention: If the touchpad is not working after assembly, check: Is the plume connected to the end (the snap of the latch should be heard); Is there any clamping on the plume (blow the connector with compressed air); Are the screws under the legs mixed up (long screws can press the board).

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Before disassembling, try cleaning your laptop from dust through the vents with a compressed air can (such as the Kontakt Chemie), which solves the problem of overheating in 60% of cases without the risk of damage to the case.

What to do after successfully opening the lid

When the lid is finally removed, the RedmiBook 4 internal device will open up in front of you.

• 🖥️ Motherboard with Intel Core processor i5-11300H or Ryzen 5 5500U (depending on the modification).
• 💾 M.2 SSD (slot PCIe 3.0 x4) — Supports up to 1 TB of storage (for example, WD Black SN770).
• 🧊 Cooling system with two heat pipes and one Sunon fan PF40101VX-Q000U-A99.
• 🔋 Battery capacity of 40 Wh (model) L19M4P42), case-stick.

If your goal is to replace the thermopaste, consider: Xiaomi uses a custom Shin-Etsu G751 paste with high viscosity. To remove it, you will need isopropyl alcohol 99% and lilaless wipes. The new paste should have a thermal conductivity of at least 12 W / m·K (for example, Thermal Grizzly Kryonaut).

To update RAM, note that in RedmiBook 4 memory is soldered to the motherboard - there are no replacement slots! This applies to all modifications, including the RMB-4300 and RMB-4500. The only upgrade is the SSD replacement.

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In RedmiBook 4, RAM is non-replaceable, it is integrated into the motherboard, and the only upgrade available to the user is to replace the M.2 SSD with a capacious or faster drive.

Building the body: how to avoid mistakes

The assembly is often more difficult to disassemble.

1. Check all connectors Make sure the touchpad plume, Wi-Fi antennas and battery connector are connected before clicking. In the RMB-4500, additionally check the keyboard backlight connector (located below the left hinge of the screen).
2. If you have disconnected the battery, make sure it is tightly glued to the case before installing the lid. Use 3M 467MP double-sided tape (.5 mm thick).
3. Tighten the screws cross-cross Start with the corner screws, then move to the central. Puff force - no more than 0.4 Nm. Twisted screws can deform the body.

After assembly, turn on the laptop and check:

• 🔹 Does the touchpad work (cursor movement, clicks, gestures).
• 🔹 Wi-Fi and Bluetooth are connected (check antennas).
• 🔹 Is there any extraneous noise from the fan (may indicate improper installation of the cooling system).

⚠️ Note: If the laptop does not turn on after assembly, but the power indicator is on, the problem may be: Unconnected battery connector (check the black and red wires). Short circuit due to improperly installed screws (twisted all screws and check their length). Damaged keyboard plume (frequent problem with abrupt closure of the cover).

Alternative methods of disassembly (if nothing helps)

If the lid fails despite your best efforts, consider these options:

• 🔥 Heating of the body: Fenom (temperature not higher than 60)°C) warm up the plastic latches along the seam for 2-3 minutes, the plastic becomes more elastic!
• 🧲 Suction cup use: Suction cups for removing smartphone screens (diameter 5-7 cm) can help to evenly pull the lid up.:: Secure 2 suction cups at corners and gently pull.
• 📦 If the laptop is warranty or you are afraid to damage it, it is better to contact the authorized service center Xiaomi. The average cost of dismantling for cleaning is 1,500-2,500 rubles.

For the RedmiBook 4 Pro (if you have one), the disassembly process is different – it uses an aluminum case with 16 screws and additional rivet fixation.

Frequent questions about the RedmiBook 4 demolition