Smartphone Xiaomi Redmi Note 5 has proven itself as a reliable device, but even time-tested models have mechanical damage. broken glass, cracked screen or failed sensor is not a reason to immediately carry the gadget to the service center, where the cost of work can be a significant part of the price of the device.
But before we take action, we need to be clear about the risks and scope of the work ahead, and in this model, the touch layer is integrated into a single assembly, which makes it easier to do, but requires careful handling of adhesives, and careful study of the theoretical part before disassembling will prevent fatal errors that can lead to final electronic breakdown.
In this article, we will take a detailed look at each step of the replacement, from the selection of components to the final calibration, you will learn what tools are really needed and what you can do without, and you will get a step-by-step algorithm of actions that will help even a beginner to cope with the task.
Diagnosis and selection of components
The first step is to determine exactly what the fault is, if you see bright spots, stripes, or if the screen doesn't respond to touch completely, and the image is still clear, the problem is in the sensor. In the case of the Redmi Note 5, the plume connecting the digitizer to the motherboard, or the layer itself that perceives the touch, often fails.
When choosing a new part, it is critical to pay attention to quality. The market is saturated with copies that can malfunction or fail in a month. The original touchscreen has an oleophobic coating and perfect sensitivity, while cheap counterparts often sin “dead zones” on the edges of the screen.
Note the labeling when buying. There are different versions of display modules for this model depending on the region of delivery (Global, China, India). Although they are often physically identical, the controller firmware may differ, which in rare cases causes malfunctions in autobrightness or multi-touch.
- 🛠️ Original: full compliance with color reproduction and sensitivity of factory standards.
- 💰 Copy (AAA): budget option, may have thicker frames or work worse at low temperatures.
- 🔌 Train: Be sure to check connector integrity on the new module before installation.
⚠️ Note: When buying a module "assembled" make sure that the package is framed. Glue glass separately at home is almost impossible without professional equipment and often leads to marriage.
Tools and training required
The success of the operation depends on 50% on the preparation of the workplace and the availability of the right tools. To disassemble the Xiaomi Redmi Note 5, you will need a specific set, since the body of the device is assembled quite tightly and has a number of mounting features.
First of all, you need a heating element, the back cover is glued around the perimeter, and without first warming up the glue, it will not go off without damage, you can use a professional heating pad, but a regular hair dryer will do well if you act carefully without overheating the plastic.
To unscrew the screws, you need screwdrivers with the appropriate bits. This model uses screws of different sizes, so immediately prepare a magnetic mat or container with cells so that you do not confuse the fastener. A lost screw or screw of the wrong size can damage the motherboard or body.
☑️ Preparation for repairs
List of required equipment:
- 🔥 A hair dryer or thermophen to heat up adhesive base.
- 🔪 Thin metal or plastic mediator (opener).
- 🧲 Set of screwdrivers (cross-haired) P2, P000 small-rotor).
- 🧴 Clay. B-7000 or T-7000 lock-in.
- 🧹 Alcohol wipes for degreasing surfaces.
Dismantling of the back cover and battery
The disassembly process begins with the gently removing the back panel. heat the perimeter of the cover for 3-5 minutes to a temperature of 60-70 degrees. the plastic should not melt, so keep the hair dryer at a distance of 5-7 cm and constantly move the air flow.
Once warmed up, the suction cup is placed at the bottom of the back cover, closer to the logo. Pull the suction cup up to create a gap, insert a mediator into the resulting gap. Driving the tool along the faces, gradually cutting through the glue layer. Do not enter the tool deeply so as not to damage the fingerprint scanner plume.
Once the lid is removed, you can access the insides, and the first thing you need to do is turn off the battery, the battery plume is under the plastic safety bar at the top of the smartphone, unscrew the slat screws, remove it, and disconnect the battery connector from the motherboard, which is a mandatory safety procedure before any further manipulation.
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If the sucker is poorly maintained on a glossy surface, wipe the place of attachment with an alcohol napkin for degreasing - the clutch will be much better.
Next, unscrew all the visible screws that attach plastic elements and speaker. Redmi Note 5 has a lot of hidden screws under the stickers and in the recesses. Carefully examine the case: if something is not removed, you missed the fastener.
Removal of the display module
Once the speaker and the lower board are dismantled, you can start removing the screen itself, and the motherboard in this model is covered by a metal screen, which you also need to remove by first unscrewing all the screws around the perimeter, and be very careful: thin antenna plumes can pass under the board.
Disconnect the display and touchscreen plumes from the motherboard, which can be protected by metal clipping slats, bend them carefully and pull the connectors upwards without swinging from side to side so as not to break the contacts.
The display module is glued into a frame. To remove it, you will need to heat the perimeter of the facial glass again. Warm up the screen for 2-3 minutes. Then, using a suction cup, try to lift the module. If it does not go, gently walk with a thin blade or string (if you have experience) around the perimeter, cutting the glue.
| Phase | Action. | Risk | Tool. |
|---|---|---|---|
| 1 | Heating the lids | Deformation of plastic | Fen |
| 2 | CBR shutdown | Short circuit. | Mediator. |
| 3 | Removal of plumes | Contact break | Tweezers |
| 4 | Screen unplug | Breaking the matrix | Suction/Blade |
What to do if the plume is broken?
Installation of a new touchscreen and assembly
Before installing a new module, you need to carefully clean the frame of the residue of old glue. Use alcohol and a plastic blade. The surface must be perfectly smooth and clean, otherwise the new screen will be skewed or gaps will be visible.
Put a thin layer of glue on the perimeter of the B-7000 or T-7000. Don't put glue in the center where the matrix is located! Let the glue dry for 1-2 minutes to make it sticky. Gently install the new module, combining all the holes and edges. Slightly press the perimeter.
Connect the display and touchscreen plumes to the motherboard. Make sure they're inserted before the click and are fixed with the clamping slats. Don't turn the phone on completely until you make sure all the screws are in place and nothing is hanging inside the case.
- ✅ Check the sensor before the final gluing of the body.
- ✅ Make sure there are no artifacts in the image.
- ✅ Check the front camera and proximity sensors.
Once tested successfully, you can twist all the screws in reverse order, and pay special attention to the motherboard screws, which must be tightly twisted, but without fanaticism, so as not to disrupt the thread in the textolite.
Calibration and performance check
Once the smartphone is built, you need to do a test, turn on the device and check the reaction to touch in all corners of the screen. Often, the extreme 2-3 millimeters may not work due to calibration or copy quality.
For deep diagnostics, Xiaomi phones have an engineering menu. Dial ##6484## in the Phone app. Select Touchpanel. Swipe your finger through all the squares on the screen, they should light up green, and you can see dead zones.
If the touchscreen is not working properly (missing touch, "gluts"), try to switch the connector or wipe the contacts with alcohol. Sometimes it helps to reset the settings to the factory, if the problem is software-based after replacing the hardware.
⚠️ Warning: If the screen starts to push buttons spontaneously (phantom presses) after the replacement, it may be a problem with grounding or poor-quality touchscreen.
Frequent errors and their consequences
One of the most common mistakes is ignoring the cleaning of the frame: The remaining old glue creates bumps that can cause a new screen to crack at the first slight pressure or fall.
The second mistake is to use superglue instead of special adhesive for electronics. Regular cyanacrylate adhesive crystallizes over time, becomes brittle and can leak, spoiling the optics of the display or damage the plastic of the case when reassembled. Use only the B-7000/T-7000.
The third mistake is that the plume is damaged by sloppy bending. The plumes in the Redmi Note 5 are pretty thin. If you feel resistance, don't pull. Check if you forgot to unscrew some screw or remove the protective pad.
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The quality of the touchscreen replacement by 80% depends on the accuracy of cleaning the frame and the correctness of connecting the plumes, and not only on the quality of the spare part itself.
Remember that poorly performed repairs can lead to loss of tightness (although it is already weak in this model) and dust getting into the display module, which will create undetectable spots on the image.