What to do if the headphone lid from Xiaomi is broken: 7 working ways to repair

Breaking the cover of the headphone case Xiaomi is a common problem faced by owners of models AirDots, Redmi Buds, FlipBuds and others TWS-Headsets. Plastic latches break with time, the glue peels off, and the opening mechanism starts to jam, and in most cases, you can do the repair yourself without having to buy a new case or go to the service center.

In this article, we'll look at all the possible causes of failure, from cracks in the hinges to magnets, and we'll also offer step-by-step instructions with photos and videos on how to restore the lid at home. You'll learn what materials you need, where to buy them cheaply, and how to avoid repeated breakages. Separately, we'll look at cases where repair is not advisable, and it's better to replace the case right away.

Important: if your headphones are still warranty, self-repair covers automatically cancel it, in which case it is better to contact the authorized service Xiaomi - the replacement of the cover can be done for free.

1. Diagnosis of breakdown: why the lid does not close

Before you fix it, you need to determine exactly what broke. Xiaomi cases have several "weak spots" that break most often:

• 🔹 Cracking on the loop – plastic becomes brittle over time, especially if the case is often dropped.
• 🧲 Magnet loss – the cover is not fixed in the closed position, although mechanically intact.
• 🔧 Latch breakage – the tongue that holds the lid, breaks or is erased.
• 💧 Detachment of glue – if the case was disassembled earlier, the glue could dry out, and the parts disconnected.
• 🌀 Mechanical jamming – dirt or deformation interferes with smooth opening/closing.

To diagnose the problem, follow the following steps:

1. Carefully examine the cover for visible cracks (especially in the hinges area).
2. Try to close the case and listen - if you hear a click, but the lid immediately opens, the problem is in the magnets.
3. Pull the lid up: if it resists, but then opens sharply, the latch has broken.
4. Check if the lid in the loop is not a sign of axis wear.

If you can not determine the breakdown visually, shoot a video on your smartphone in slow motion (Slo-mo) – so it is easier to notice the defects of the mechanism.

Repair of a cracked loop: how to glue and strengthen

Cracks on the loop are the most common failure. Xiaomi's plastic is fragile, and even a small mechanical impact can lead to a fault. Depending on the degree of damage, there are several ways to repair:

Method 1: Superglue gluing (for small cracks)

If the crack is shallow and does not affect the rotation axis, you can do with cyanoacrylate glue (for example, Moment Super Epoxy or Loctite 401). It is important to use a gel formula - it does not spread and better holds the plastic.

Instructions:

1. Clean the crack surface with an alcohol tampon (remove the fat and dirt).
2. Apply the glue in a thin layer along the entire length of the crack without affecting the moving parts.
3. Tightly compress the parts for 10-15 minutes (you can use clamps or rubber bands).
4. Let the glue dry for 24 hours – do not use the case at this time!

Cleaner (alcohol/acetone)|Cyanoacrylate glue (gel)|Clamps or rubber bands|Cotton swabs to remove excess-->

Method 2: Reinforced with epoxy resin (for severe damage)

If the loop splits or the crack is deep, the glue doesn't help, you need to reinforce the structure, and you can use an epoxy resin like Poxipol or EDP to create a strong layer that restores the structure of the plastic.

Step-by-step:

1. Mix the resin with a hardener in a ratio of 1: 1 (according to the instructions).
2. Apply the mixture on both sides of the crack, capturing 2-3 mm of whole plastic.
3. Compress the parts and fix with tape or tape.
4. Leave for 12-24 hours at room temperature.
5. After drying, clean the floods with sandpaper (1000 grit).

⚠️ Attention: Epoxy resin is toxic! Work in gloves and in a well-ventilated area. Don't use hot glue to repair it - it melts plastic and peels off quickly.

3. Magnet recovery: why the lid is not fixed

If the cover of the case is not kept closed, but mechanically intact, the problem is most likely magnets. Xiaomi they glue on bilateral tape, which eventually loses stickiness, and magnets can demagnetize from impacts or other magnetic fields (for example, if the case was lying next to the speakers).

To check the magnets:

1. Put a metal object (like a paper clip) to the lid, and if it's not, the magnets are out or demagnetized.
2. Shake the case - if something rattles inside, the magnets come off and dangle.

How to Stick the Magnets Back

You'll need:

• 🧲 New magnets (you can take out of old equipment or buy on AliExpress - look for neodymium ones) 3×1 mm).
• 🔥 Thermoclei (such as Brauberg) or epoxy.
• 📏 Tweezers and toothpick for precise installation.

Instructions:

1. Carefully open the case (if the magnets are inside), to do this, apply the lid with a plastic card or mediator.
2. Remove the old glue and clean the seats with alcohol.
3. Apply the minimum amount of glue to the magnet and set it in place, observing the polarity (the north pole should be attracted to the south).
4. Close the lid and check the fixation. If the magnets are weakly attracted, add another layer.

⚠️ Warning: Do not use superglue for magnets - it is fragile and can crumble from vibration. The best option is thermal glue (holds well, but allows you to dismantle the magnets if necessary).

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If you are not sure about the polarity of magnets, check them with each other before installing: opposite poles attract, the same poles repel.

Repair of latch: if the lid does not close until the end

The latch is a plastic tongue inside the case that holds the lid in the closed position, and over time it wears, breaks, or bends, so that the lid doesn't close tightly, and in most cases, the latch can be rebuilt without being replaced.

Signs of latch failure:

• 🔳 The lid closes, but immediately bounces back.
• 🔊 A crunch or creaking can be heard when closing.
• 📉 The latch falls inside the case.

Method 1: Bending the tongue (if the latch is intact, but does not fix)

If the tongue is just bent, it can be bent carefully:

1. Open the cover (as in the section about magnets).
2. Find the latch, it looks like a little plastic hook.
3. Push it with a needle or tweezers and bend slightly upwards (1-2 mm).
4. Check the lid fixation. If the tongue bends again, attach it with a drop of glue.

Method 2: Replace the latch (if it is broken)

If the tongue breaks off, it can be replaced by a self-made one from:

• 📎 Paperclips (unwind and cut a piece 5mm long).
• 🔧 A piece of plastic from old equipment (for example, from housings) USB-flash-drive).
• 🧵 Toothpicks (if the tongue is small).

Procedure:

1. Remove the remains of the old latch with pliers.
2. Prepare a replacement: If you use a paper clip, bend it in the shape of a hook.
3. Stick the new tongue in place with epoxy resin or heat glue.
4. Let the glue dry and check the mechanism.

⚠️ If the latch is broken at the base, and the case is still warranty, do not try to repair it yourself - in the Xiaomi service can replace the whole case.

5. The squandering mechanism: how to return a smooth opening

If the lid opens with force, creaks or jams, the problem is the mechanism of the hinges.

• 🧴 Drying lubricant (plastic rubbed "dry»).
• 💨 Dust/mud infestations in the rotational axis.
• 🌀 Deformation of plastic from overheating (for example, if the cover was lying in the sun).

To eliminate the angst:

1. Clean the mechanism: Blow the dust with a compressor or a can of compressed air. Wipe the axis with a cotton swab soaked in isopropyl alcohol.
2. Lubricate the hinges: Use silicone lubricant (for example, WD-40 Apply 1 drop on the axle and open/close the distribution lid several times.

Level the deformed plastic:

• If the lid is skewed, gently heat the problem area with a hair dryer (60).°C) and give it the correct shape.

⚠️ Note: Do not use vegetable oil for lubrication or WD-40 They attract dust and will make things worse over time, and avoid lithole and solidol, which are too thick for plastic machinery.

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If the lid is snagging because of the deformation of the body, a hair dryer will temporarily help, but for a long-term solution, you will need to strengthen the body with an epoxy or replace the case.

6 When repairs are not feasible: signs of hopeless breakdown

Not all Xiaomi cover breaks are repairable, and in some cases it is cheaper and easier to buy a new case or replace the headset entirely, and signs that repairs won’t help:

If your case falls into the column «❌ No, consider the options:

• 🛒 Buy the original case on AliExpress or in Xiaomi branded stores (price - from 500 to 1500) ₽).
• 🔄 Buy used case on Avito or Yula (cheaper, but the risk of getting faulty).
• 🆕 Buy new headphones (if the model is outdated, and the case is not sold separately).

⚠️ Note: When buying a case, check compatibility with your headphone model! For example, the cases from Redmi AirDots and Redmi Buds 3 look similar, but have different charging connectors.

7. Prevention: how to prolong the life of the cover

To make the cover last longer, follow simple rules:

• 🚫 Do not drop the case – even from a small height (for example, from a table) plastic can crack.
• 🌡️ Avoid overheating – do not leave the case in the sun or near the battery (plastic deforms).
• 🧴 Regularly lubricate the loops (every 3-6 months) with silicone lubricant.
• 🧲 Do not place the case near the magnets (speakers, refrigerator, induction charges).
• 💧 Clean the mechanism of dust with compressed air or a soft brush.
• 🔋 Do not overload the case – do not put heavy objects on it (for example, a smartphone).

If you often carry a case in your pocket, consider buying a silicone case or bumper – they protect against scratches and soften bumps when falling.

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Keep the case in a bag or backpack in a separate pocket - so it is less susceptible to mechanical damage.

Frequently Asked Questions (FAQ)