Disassembly Xiaomi Redmi Airdots 2: step-by-step repair instructions

Modern wireless headphones, such as the Xiaomi Redmi Airdots 2, are compact and complex devices where every millimeter of internal space is involved. Owners often face the need to open the case when the battery capacity is reduced or moisture enters the speaker, a process that requires extreme care, since the manufacturer does not provide maintenance to the user, and all connections are made by soldering or tight landing.

Before you start active action, you need to be clear about the risks: opening the case is guaranteed to lead to the loss of warranty, if it was still in effect. In addition, the thin plastic of the case is easily damaged by inept movement, and the internal plumes can be clamped if the assembly is wrong. However, if the device has already failed and nothing to lose, a competent approach will bring the gadget back to life.

In this article, we'll look at the algorithm, the tools and the technical nuances that are specific to the second version of the Chinese giant's popular plugs, and the adhesive composition in this model is quite aggressive, so it's almost impossible to open the case without damage without a hairdryer. Let's prepare the workplace and start diving into the microcosm of audio.

Tools and workplace preparation required

You can't disassemble electronics in a high-quality way without specialized tools. For Redmi Airdots 2, you'll need a minimal but high-quality kit, first of all, a thin metal scalpel or sharp knife that will help you to slap the lid, and a plastic spatula (mediator) for the safe snapping of clips.

Also, a building or household hair dryer is an indispensable tool, and it's necessary to soften the adhesive layer that holds the halves of the headphone body, and you shouldn't use an open fire, because it can melt the outer shell or damage the internal electronics.

• 🛠️ Thin cross screwdriver (Phillips size #000 or #00) for screws inside the case.
• 🔧 Tweezers with curved ends for extracting small parts and working with the battery.
• 🧪 Isopropyl alcohol or special liquid for dissolving glue (B-7000).
• 🧲 Magnetic mat or organizer for folding screws so as not to lose them.

The workplace should be well lit, fine details such as speaker membranes and contact areas require excellent visibility, and it is recommended to use a magnifying glass or headlight for better control of the process.

Primary opening of the headphone body

The most difficult step is to start disassembling. The Xiaomi Redmi Airdots 2 body has no visible screws on the outside, as it is assembled on glue and internal latches. You need to start from the outside, where the speaker grid is located, or from the end seam.

Heat the body with a hair dryer for 1-2 minutes to a temperature of about 60-70 degrees Celsius. This will make the plastic more elastic and the glue soft. After that, carefully insert the scalpel blade into the junction between the top and bottom of the body. Move the blade along the seam, trying not to stick it deep so as not to damage the battery or board.

⚠️ Warning: Don't try to unplug the body with force. The plastic is fragile, and the excessive pressure will lead to cracks in the front panel that will no longer be able to hide.

Once you feel the glue weaken, use a plastic blade to go around the perimeter. Gradually increase the gap. Inside, you'll see the main board and the speaker contacts. Be careful: some models may have thin wires that connect elements that are easy to break in a sharp jerk.

Dismantling of internal electronics

When you remove the outer cover, you'll see the internal structure of the device. In Redmi Airdots 2, the main board is usually secured in a special plastic box. To access the battery or speaker, you often need to unscrew one or two micro-screws.

Use a thin cross screwdriver to fix the fasteners. The screws can be hidden under stickers or a layer of silicone, so inspect the insides carefully. Once the screws are removed, the board should easily separate from the case if you have completely freed it from the glue.

The battery in these headphones is usually glued to the body or held by a tight fit. To remove it, carefully tuck the edge of the battery with a plastic tool. Metal objects are best avoided here, so as not to penetrate the shell of the lithium polymer cell.

• 🔋 Disconnect the battery connector from the board if it is connected through a connector.
• 🔌 Be careful with plumes: they are very thin and tender.
• 🧹 Clean the insides of the residue of old glue before assembly.
• 🧐 Check the status of contacts speaker for oxidation.

If you're looking to replace the speaker, it's available after the fee is removed, often with glue and soldering contacts, and you'll need a thin stinging iron and micro soldering skills.

Table of technical characteristics of components

To understand what you are working with, here are the basic parameters of the internal components of Xiaomi Redmi Airdots 2. These data will help you find replacement analogues or diagnose malfunctions.

As you can see from the table, the main power element is a compact, small-capacity battery, which most often fails after 1-2 years of active use, and replacing this component can significantly extend the life of your headphones.

Replacing the battery and eliminating typical problems

The most common cause of disassembly is quick discharge, and the new battery for Redmi Airdots 2 can be found on radio markets or ordered from specialty stores, and it is important to choose a cell with similar dimensions and connector.

If the battery is soldered, use a soldering iron with a temperature of about 300-350 degrees. Try not to overheat the contacts so as not to peel off the tracks on the board. When installing a new element, make sure that the correct polarity is in place: the mixed plus and minus can burn the charge controller.

⚠️ Attention: Lithium polymer batteries are sensitive to punctures. If you damage the battery shell, it may catch fire or even explode. Dispose of damaged cells correctly.

Also, when disassembling, contact oxidation is often detected due to sweat or moisture. Washing the board with an ultrasonic bath or alcohol can solve the problem with charging or sound without replacing parts.

Device assembly and final inspection

The assembly is done in reverse order. Before connecting the halves of the body, be sure to check the health of all systems. Connect the headphone to the charger without completely closing the case, and make sure that the indicator lights up.

Use a special electronics glue (e.g., B-7000 or T-7000) to fix the case, apply it in a thin layer around the perimeter, avoiding getting inside the speaker or board. Remove the excess glue immediately with a dry wipe.

Squeeze the body halves hard and lock them with gum for 1-2 hours until the glue is completely dry. Don't turn the device on immediately, let the chemical composition polymerize.

• ✅ Check the density of the cover fitting.
• ✅ Make sure the buttons are pressed with the correct move.
• ✅ Test the pairing with a smartphone.
• ✅ Check the sound at different frequencies.

A well-assembled headphone should look like a new one, without gaps and creaks. If the assembly was successful, you saved a significant amount on buying a new headset.

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Use rubber harnesses or stationery gums to fix the case during adhesive drying, which will ensure uniform pressure throughout the perimeter and reliable bonding.

Frequently Asked Questions (FAQ)

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The key to successful disassembly is patience and lack of haste, and every movement must be calibrated, because the safety margin of the micro-components is minimal.