Broken glass or a broken touchscreen on a smartphone is always an unpleasant situation that disrupts the usual rhythm of life. Xiaomi Redmi Note 8 Pro, despite its popularity and reliability, is not immune to falls and mechanical damage. Self-replacement of the display module can save up to 60% of the cost of repairs in the service center, if you have minimal skills with the equipment.
In this article, we will discuss in detail the process of replacing the screen module, including removing the back cover, turning off the plumes and repainting the frame. It is important to understand that in modern smartphones, screens are often glued to the body, which requires accuracy and the use of special glue. The Redmi Note 8 Pro display is a single module where the matrix and glass are soldered in the factory, so the device changes completely.
Before you start, evaluate your strength: if you have shaking hands or lack the necessary tools, it is better to contact the professionals. However, if you are determined to restore the gadget, prepare a workplace with good lighting. Next, we will consider all the steps of the procedure so that you can perform the replacement efficiently and without losing the leakage of the case.
Tools and workplace preparation required
The quality of the result depends on the equipment used. To replace the display with the Redmi Note 8 Pro, you will need a specific set of tools that are not always found in a regular box with screwdrivers. A standard cross screwdriver will not help here, since the design of the smartphone uses screws with unusually shaped screws.
You will definitely need:
- 🛠️ Heating tool (dryer or heating pad) for softening the glue under the back cover.
- 💳 Plastic blades and mediators for neat opening of the body without scratches.
- 🧲 Magnetic mat or organizer for sorting screws of different sizes.
- 🧴 Clay. B-7000 or T-7000 for fixing the new module and the back cover.
⚠️ Warning: Use only plastic tools to open the case. Metal objects can damage internal plumes or even puncture the battery, which will lead to fire.
The workplace should be clean, dry and well-lit, it is recommended to use an antistatic bracelet or at least periodically touch grounded objects to remove static electricity, static can disable the sensitive electronics of the smartphone even before repairs begin.
☑️ Checking readiness for repair
Removal of the back cover and removal of protective panels
The process of disassembling the Xiaomi Redmi Note 8 Pro begins with heating the rear glass panel. The glue holding it at room temperature is very strong, and trying to remove the lid "cold" will lead to its destruction. Heat the body perimeter with a hairdryer to a temperature of about 80-90 degrees for 2-3 minutes, constantly moving the air flow.
After heating, insert a suction cup at the bottom of the back cover, pull up slightly, and insert a thin plastic blade into the resulting gap. Drive the perimeter with the tool, gradually separating the glass from the frame. Be careful in the area of the camera module: there is a flash plume that can be damaged by sloppy movement.
Once you remove the back cover, you'll have access to the insides, and the first thing you need to do is unscrew a lot of screws that lock the plastic shield that covers the motherboard and the battery. The screws can be of different lengths, so use a magnetic mat or circuit so you don't confuse them when you build them.
Nuances of work with a fingerprint scanner
When you take off the plastic protection, you see the battery and the bottom board, and before you disconnect the display plumes, you have to turn off the battery, which is a critical step for the safety of the motherboard.
Disconnecting the battery and dismantling the old module
Find the battery connector on the motherboard, which is usually under the metal screen or next to other connectors, gently slap the connector with a plastic blade and unplug it, and then you can start working with other components.
Next, remove the metal frame that presses the display connectors and touchscreen. Unscrew the screws that lock this frame and put it aside. Now access to the plumes is open. Disconnect the main display plume and the touchscreen plume (if they are separated structurally) or a single module plume.
The display module in the Redmi Note 8 Pro
| Component | Type of attachment | Risk of damage | Tool. |
|---|---|---|---|
| Back cover. | Glue B-7000 | Tall (glass) | Fryer, sucker. |
| Protective plate. | Screws (cross) | Low. | Phillips screwdriver |
| Display plume | Connector latch | Medium. | Plastic spatula |
| Screen module | Perimeter tape. | Medium. | Scapula, heat. |
⚠️ Attention: Never pull the plumes with your fingers or tweezers. You can damage the conductive tracks inside the plume and the new screen won't work. Only take the hard parts of the connectors.
After all the cables are turned off, carefully remove the old module. Clean the plastic frame of the residues of old glue and double-sided tape. The surface should be perfectly smooth and fat-free before installing the new screen.
Installation of a new display and check the functionality
Before you stick a new module, make sure to test the connection. Connect the plumes of the new display to the motherboard without fixing them with screws or gluing the screen itself. Connect the battery and turn on the smartphone.
Check the following parameters:
- 👁️ Absence of broken pixels and image artifacts on white and black background.
- 🖐️ Touchscreen response throughout the area (you can use the check mode in the engineering menu).
- 💡 Operation of the proximity and brightness sensor (put your hand to the top speaker during the call).
- 🎨 Correctness of color rendering and viewing angles.
If all tests are successful, turn off the phone and turn off the battery. Apply a thin layer of B-7000 glue or use a pre-painted double-sided tape around the perimeter of the frame. Set the module, press it evenly and let the glue grip for 10-15 minutes.
The B-7000 glue dries for about 24 hours before full polymerization, but the initial grasping is quick. Don't overdo it with the amount of glue, the excess glue can be squeezed out onto the matrix or into the speaker.
Smartphone assembly and final checks
Once the screen is fixed, put the metal connector frame in place and twist all the screws. Make sure no screws are left out, which is a common novice error. Then plug the battery in and assemble the rest of the structure in reverse order.
Installing the back cover requires re-applying the glue. Clean the end of the case and the lid itself of the old glue with alcohol or degreasing. Apply the new glue with a thin strip, press the lid and lock the smartphone with money bands for 1-2 hours.
After assembly, turn on the device and do the final test, check the front camera, speakers and microphone, as during disassembly, you could accidentally damage their plumes or shift the contacts.
💡
To ensure that the glue is evenly distributed and the lid is firmly settled, put a heavy book on top of the smartphone (through a towel) for the drying time, which will ensure the perfect fit without gaps.
Possible problems and ways to solve them
Even with a neat assembly, there can be problems. If the screen doesn't light up, check the density of the plume landing. Sometimes the connector doesn't snap completely the first time, and it's also worth checking the integrity of the plume itself for the ruptures.
If the touchscreen is not working correctly (the cursor is dancing, the angles are not reacting), the problem may be in a poor-quality copy of the display or in the absence of grounding. In some cases, reconnecting the plume or resetting the settings to the factory helps.
A cloudy image or rainbow patches can indicate a matrix is failing, and unfortunately, this is not uncommon in cheap copies of screens, and the only solution is to replace the module under the seller's warranty.
⚠️ Note: If after changing the screen, the smartphone stopped seeing SIM-map or Wi-Fi, check the antenna contacts, and when disassembled, they are easily touched or displaced, resulting in loss of signal.