Smartphone Xiaomi Redmi Note 5A Prime, also known under the code name UGG, has proven itself as a reliable budget device, but time does not spare the equipment. Various mechanical damage, battery wear or failure of the display module require skilled repair. Self-disassembly device is a difficult, but often the only possible way to bring the gadget back to life without overpaying in the service center.
The process of dismantling components of this device has its own unique features, which distinguish it from more modern models with glass rear covers. It uses a classic scheme with a removable plastic panel, which greatly simplifies access to the main nodes, but requires care when working with fragile plumes. In this article, we will look in detail how to properly and safely disassemble the Xiaomi Redmi Note 5A Prime without damaging important design elements.
Before we take action, we need to realize that any interference with the device carries risks. Mishandling the tools can cause damage to the matrix, puncture of the battery or rupture of thin conductive tracks. Our goal is to provide the most detailed instructions that minimize these risks and help you successfully replace the necessary parts.
Workplace preparation and necessary tools
The good disassembly of any electronic device starts with the right organization of the workspace. You'll need a table with good lighting to see the small screws and connectors. The absence of a clutter on the table will allow you to avoid losing tiny fasteners, which are often lost at the most inopportune time.
To work with the Redmi Note 5A Prime, you will need a minimal but specific set of tools. Using inappropriate items such as kitchen knives or thick screwdrivers can cause damage to the body or even injury.
- 🔧 Precision screwdriver kit (cross-hatch) PH00, PH0) cock-wheel.
- 🎴 Plastic mediators or shoulder blades for neat opening of the case without scratches.
- 🌡️ A dryer or heat pad to soften the glue (although this model uses minimal glue).
- 🧲 Magnetic mat or containers for sorting screws by disassembly stages.
Special attention should be paid to safety. Lithium polymer batteries installed in your smartphone are sensitive to punctures and overheating. If you plan to change the battery, make sure you have a fire extinguisher or sand tank on hand in case of an emergency, although the probability of an incident with careful operation is minimal.
💡
Use tweezers with curved ends – it is ideal for tweezing plumes in hard-to-reach places without damaging their contacts.
Primary dismantling: Removal of the back cover and battery
Unlike many modern monoblocks, the Xiaomi Redmi Note 5A Prime has a removable back cover, which is a huge plus for a repairman. However, the plastic becomes brittle over time, and careless movement can lead to cracks or chips in the corners.
First, turn off the device and remove the tray for SIM-It's a standard procedure that's often forgotten, which can cause the reader to break when you try to remove the lid.
⚠️ Warning: Never use metal tools to smack the back cover near antenna inserts, as this can disrupt the integrity of current tracks and impair signal reception.
Carefully tuck the lid with your nail or plastic spatula and drive the tool along the perimeter, snapping the plastic locks. A characteristic click will tell you that the latch connector has successfully been successfully plugged. Once the lid is removed, you will have access to the battery and the main board.
The next step is to remove the battery, and there's a special tongue on the bottom of the battery, and you can pull it out, and if the tongue is broken or missing, don't try to pick the battery with sharp objects, and you'd better warm the back of the device with a hairdryer (not above 60-70 degrees) to soften the adhesive layer, and gently shovel the battery with a spatula.
Removal of the main board and disconnection of plumes
Once the battery is removed, the main board, which is soldered with the processor, memory and power controllers, is dismantled, and the board is mounted with multiple screws that are hidden under protective plugs or located around the perimeter. In the UGG model, the screws are symmetrically arranged, which makes it easier to remember their location.
The first thing you do is turn off the plumes that go to the display and the touchscreen, and they can be pressed by metal plates that are also attached by screws, and you unscrew them, you get access to the connectors, and you use a plastic blade to snap the plumes, avoiding the use of metal.
Then you have to disconnect the antenna cable, which often goes from the bottom of the case to the main board, and it has a round connector that you need to tuck in carefully, moving strictly upwards, and a sharp movement to the side can tear the connector away from the board, which will require complex soldering to recover.
Once all communications are turned off, unscrew all the visible screws holding the board. The number can vary, but usually no more than 6-8. Carefully raise the board, make sure nothing gets stuck anywhere, and remove it from the case.
| Component | Type of attachment | Tool. | Risk of damage |
|---|---|---|---|
| Back cover. | Plastic latches | Scapula/Mediator | Low (plastic cracks) |
| Battery | The glue layer | Fen/Spaddle | Medium (battery puncture) |
| Basic fee | Screws + plumes | Screwdriver PH00 | High (steam cliff) |
| cable | Press-fit connector | Tweezers/Spaddles | High (connector break) |
💡
The main rule when working with boards is to first turn off the battery (if possible) or the power plume before touching other connectors to avoid short circuit.
Dismantling of the display module and lower board
If your goal is to replace the screen, then the process becomes more complex after removing the main board. The display in the Redmi Note 5A Prime is glued to the perimeter frame. It will require heating to remove it. Use a hair dryer, evenly warming the edges of the screen for 2-3 minutes.
Do not overheat the central part of the matrix, as this can lead to yellow spots or complete exit. LCD-Move the hair dryer around the perimeter, gradually increasing the temperature, but not exceeding 80 degrees. After warming up, insert a thin fishing line or a special tool to cut the glue between the frame and the glass.
The sub-board, which houses the charging socket, microphone and headphone socket, is mounted with multiple screws and plastic fixtures, and connects to the main board with a flexible plume that runs under the battery (in some versions) or along the case, and if you replace the lower board, this plume will also have to be changed or very carefully rearranged.
- 📱 Heat the screen evenly, avoiding spot overheating.
- 🧵 Use a fishing line to cut glue - it is safer than the blade.
- 🔌 Check the integrity of the charging plume before installing a new board.
When installing a new display, make sure to try it on without glue, check the touchscreen and images. Only when you make sure that you are fully functional, apply a new adhesive B-7000 or T-8000 around the perimeter of the frame.
⚠️ Attention: Clay B-7000 It dries for about 24 hours until it's fully built. Don't turn the phone on or load it immediately after gluing it, so the module doesn't move away.
How to remove old glue from the frame?
Replacement of dynamic microphone and conversational speaker
Sound problems are a common cause of Xiaomi Redmi Note 5A Prime disassembly. If you can't hear or can't hear someone, it may be because the speaker is at the top of the screen and is often integrated into a plume or soldered to the board.
In this model, the talkable dinaric is often a separate element that is inserted into the seat, it can be closed with a grid that needs to be carefully tampered with, the main microphone is on the lower board, and the additional (for noise reduction) is on the upper end or on the button plume.
Cleaning the speaker grid with ultrasound or a soft brush with alcohol often helps to restore sound without replacing parts. However, if the speaker membrane is broken, only replacement will help. When installing a new speaker, make sure that the polarity connection is correct, although modern connectors are usually protected from overpole.
The assembly is done in reverse order. Make sure all sealing rubber bands are in place, otherwise dust will enter the body, leading to a recurrence of the sound problem in a short time.
☑️ Check after speaker replacement
Device assembly and final inspection
Build the Redmi Note 5A Prime requires the same care as disassembly. Set the main board in place, making sure it lay in the landing holes without skewing. Twisting the screws, but don't drag them over so as not to break the thread in the plastic case.
Connect all the plumes before you click. This is a critical point: an unpressed display plume will cause the image to be missing, and a touchscreen plume will cause the sensor to be broken, and visually check if all the connectors are sitting tight and flat.
Install the battery and plug it in. Only then you can try to turn the device on. Press the power button and wait for the Mi logo to load. If the phone is on, check all the functions: call, Wi-Fi, camera and sensor.
Click the back cover, starting at one corner and gradually pressing the perimeter. The characteristic clicks around the circuit indicate that the installation is correct. If the cover is not tight, check if the plume or screw has hit it.