Disassembly Xiaomi Redmi Note 5A: Step-by-step guidance with nuances and warnings

Xiaomi Redmi Note 5A — It's a popular budget smartphone that, despite its age (released in 2017), is still in use today, but over time, even the most reliable technology needs repairs, whether it's battery replacement, dust cleaning, repair connectors or troubleshooting. The Redmi Note Disassembly 5A has its own characteristics - from fragile latches to battery glue mounting, which is important to consider so as not to damage the device.

This article will help you disassemble your smartphone safely, even if you’re doing it for the first time. We’ll take a closer look at the tools you need, the steps you take to dismantle each component, and make recommendations to avoid common mistakes. We’ll focus on critical issues like disconnecting the battery plume before you disassemble it, so you don’t have to short circuit. If you’re planning to replace your display, camera, or speaker, you’ll find current diagrams and photos of the internal structure.

Warning: self-disassembly Xiaomi Redmi Note 5A It's a security breach, if it's still in place, and it's a risk of damage to the board or the trains, and if you're not sure about your skills, you'd better go to the service center, but if you're going to do it yourself, follow the instructions carefully, without rushing.

Preparation for disassembly: tools and security measures

Before you start disassembling, make sure you have everything you need, and the wrong tools are the main cause of damage to the body or internal components, and here is the minimum set you'll need:

• 🔧 Plastic mediators or shoulder blades (2-3 - for gently putting the lid on and removing the latches. Metal tools can scratch the body!
• 🔨 Cross screwdriver PH00 (magnetic) - for the screws of the back cover.
• 🔋 Screen suction cup, which will help lift the back cover after heating.
• 🔥 Dryer or thermo-air station - for softening the glue (temperature not higher than 80)°C, so as not to damage the display!).
• 🧲 Magnetic mat or container – so as not to lose small screws and parts.
• 📸 Smartphone for photography – fix the location of plumes and screws before disconnecting.

Also, prepare your workspace: it should be well-lit, free of dust and static electricity. Work on a table with a soft substrate (such as a rubber mat) to avoid scratching the screen. If you're disassembling a smartphone to replace your battery, completely discharge it (up to 0%) before starting work. This minimizes the risk of fire if the battery is accidentally damaged.

⚠️ Warning: Do not use knives, scissors or other sharp metal objects to lick the lid! even a slight pressure can puncture the battery or damage flexible plumes under the lid.

If you're going to understand the Redmi Note 5A For the first time, practice on an old, unnecessary smartphone with a similar design, which will help you feel the pressure and the angle of the tool, and remember, the battery glue in this model is strong enough -- don't try to tear it off by force, or you risk tearing it.

Removal of the back cover: technique and typical errors

The back cover of the Redmi Note 5A It's mounted on latches and double-sided tape. The main challenge is not to break the latches when you're undercoat. Start by heating the body around the perimeter (especially in the area of the camera and the bottom). Use the hair dryer at minimum power, keeping it at a distance. 10-15 The heat should be uniform - do not concentrate heat on one area!

After heating, follow the following steps:

1. Place the suction cup on the bottom of the lid (near the USB-Type C connector). Carefully pull up - a small gap should appear.
2. Insert a plastic mediator into the gap and slowly lead it along the body, snapping the mounts. Start at the bottom edge, then move to the sides.
3. Pay special attention to the area around the volume and power buttons, where the latches are the most fragile. If the lid does not lend itself, warm up the problem area again.
4. After disconnecting all latches, remove the lid, but do not pull it sharply - it is connected to the body by a thin fingerprint scanner plume (if your model is equipped with it).

Common mistakes at this stage:

• ❌ Too much heat – can warp plastic or damage the glue under the battery.
• ❌ Using metal tools – scratches the body and can close contacts on the board.
• ❌ Sharp removal of the cover – the risk of breaking the plume of the fingerprint sensor or camera.

⚠️ Warning: If you see that the battery is swelling (even slightly) after removing the lid, do not continue disassembling! The bloated battery can ignite at the slightest damage. In this case, immediately isolate the smartphone in a non-combustible container and contact the service.

Battery Disconnection: Why It's Critical to Do It First

Once you've removed the back cover, the first action is to disconnect the battery from the motherboard.This prevents short circuits from further disassembly and protects the components from static electricity. 5A The battery connector is located at the top of the board (near the camera) and is closed with black insulation tape.

Procedure:

1. Carefully tuck the insulation tape with your nail or plastic spatula. Don't use tweezers - you can damage the contacts!
2. Under the connector you will see a white connector with 2-3 Put a plastic tool on the side and gently disconnect it from the board!
3. Fix the disconnected connector with tape to the cover so that it does not interfere with further work.

If the connector doesn't detach, don't force it! It may be fixed with extra glue, in which case, warm up the area of the connector with a hairdryer (no longer than 10 seconds) and try again. Remember, working with a connected battery can cause the board to burn if the contacts are accidentally closed with a screwdriver or tweezers.

Once the battery is out, you can start dismantling the other components, and if you're trying to replace the battery, now is the time to remove the old one.

• 🔋 Put a plastic blade on the battery from either side (where there are no plumes!).
• 🧴 Pour under the battery isopropyl alcohol (or a special solvent of glue) and wait 1-2 minutes, it'll loosen the glue.
• 🪛 Carefully push the battery around the perimeter until it separates from the housing!

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If the glue under the battery is too strong, you can use a thin guitar string or line, stretching it under the battery back and forth, which is safer than putting a shovel on it.

Dismantling motherboard and child components

Redmi Note motherboard 5A hull-mount 10-12 And remember the location of each screw, and you can easily confuse them when you build them, and we recommend that you place them on a magnetic mat in order to extract them, or take pictures before you unscrew them.

Sequence of dismantling:

1. Unscrew all screws around the board perimeter (start with corners).
2. Disconnect all plumes: 📱 Display plume (lower edge of board, under metal screen). 📸 Main camera plume (center board, next to camera module). 🔊 Speaker and microphone plume (bottom, next to the charging connector). 🔘 Power/volume button plume (right side, under metal frame).

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Typical problems in collecting fees:

• ❌ Trail break – occurs if you forget to disconnect the connector before raising the board.
• ❌ Loss of screws – use a magnetic mat or container with cells.
• ❌ Damage to antenna contacts – they are located on the edges of the board and easily bend.

If you're disassembling a smartphone to replace a charging connector, now you have access to it.The USB-Type C connector is soldered to the board, and replacing it will require a thin sting soldering station and microelectronics experience.Without soldering skills, it's better to entrust this to professionals - improper heating can damage nearby components (like a power controller).

Disassembly of the display module and camera

Redmi Note Display 5A It's made up of several layers: a protective glass, a touch module, an LCD matrix, and a backlight. When you change the screen, you usually change the entire module (called a "display unit"), because it's very difficult to separate these layers at home. If your goal is to replace glass, it is better to contact the service with lamination equipment.

For disassembly of the display module:

1. Warm up the front of the smartphone with a hairdryer (temperature — 70-80°C) during 2-3 It'll soften the glue around the screen.
2. Hold the suction cup on the bottom of the display (near the Home button, if physical). Pull it up carefully, and a gap should appear.
3. Insert a plastic blade into the gap and slowly lead it along the edge, separating the display from the body. Start at the bottom, then move to the sides.
4. After the adhesive is removed, raise the display to 45.° and disconnect the plume from the board (it is located at the bottom, under the metal screen).

Features of working with the display:

• 🔍 The display plume is very fragile - do not overflex it and do not pull the wires.
• 💧 If moisture has accumulated under the screen, dry your smartphone in rice or silica gel for at least 24 hours before disassembling.
• 🔧 To install a new display, use a two-way Scotch 3M or special glue B-7000.

Camera in Redmi Note 5A It's attached to the board with two screws and a plume to replace it:

1. Unscrew the camera mount screws (they can be under black insulation tape).
2. Carefully tuck the camera module with a plastic spatula and remove it.
3. Disconnect the plume from the board (the connector is near the module).

⚠️ Warning: When replacing the camera, do not touch the lens with your fingers - greasy marks will worsen the quality of the photos. Use lilaless wipes and gloves.

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When disassembling the display, never pick it up from the top (where the front camera and speaker are located) - there are plumes that are easily damaged!

Assembly of the smartphone: the procedure and verification

Assembling Xiaomi Redmi Note 5A It should be in reverse order, but with a few key points in mind:

• 🔧 Screw them in the same order as you screwed them out. Rotors of different lengths should not be confused!
• 📱 Trains – before connecting, check that the contacts are clean (wipe with alcohol if necessary).
• 🔋 Battery - before installing a new one, clean the contact platform on the board from glue residues.
• 🧲 Back cover – Remove old scotch before installation and paste a new one (for example, 3M 9448A).

Assembly order:

1. Set the motherboard in place and twist all the screws (do not tug!).
2. Connect all the plumes in reverse sequence, make sure they're tightly in the connectors.
3. Stick a new two-way tape onto the case and install the battery. Connect it to the board.
4. Install the back cover starting at the top (where the camera latches are located). Carefully press the perimeter to ensure the latches fall into place.
5. Turn on your smartphone and check the performance of all components: screen, cameras, speakers, buttons, sensor.

If after assembly the smartphone does not turn on:

• ❌ Check if the battery is connected to the board.
• ❌ Make sure all plumes (especially the display and power buttons) are connected correctly.
• ❌ Check the charge for foreign objects (screws, pieces of scotch) - they can cause a circuit.

If the screen is working, but there are artifacts (strips, flickering) — probably the display plume is not fully connected or damaged. Try reconnecting it. If the problem persists, the plume or matrix is faulty.

Frequent malfunctions of Redmi Note 5A and their diagnosis

Xiaomi Redmi Note 5A — A reliable smartphone, but with age, it has typical "diseases." These are the most common malfunctions and their possible causes:

If you have a Redmi Note 5A stopped holding charge (discharges in a few hours), most likely a problem in the battery — 2-3 After a year, its capacity falls on 30-50%. Replacement of the battery with a new one (for example, BL-40A capacity 3080 mAh) will return the smartphone to its previous autonomy.

Another common problem is a broken charging connector.

• 🧹 Contact contamination - clean the connector with a toothpick and alcohol.
• 🔌 Wear of contact springs - requires replacement of the connector (soldering).
• 🔋 Damage to the power controller - diagnosed by a multimeter, repair is possible only in the service.

If the smartphone does not see SIM-map, check it out:

• 📶 Slot SIM-maps for contamination or damage.
• 📡 Antenna contacts on the board (they can move away when falling).
• 📱 Network settings in the Settings menu → SIM-maps and mobile networks.

FAQ: Answers to popular questions