How to check the speaker on Xiaomi devices: from smartphones to TVs

The speakers in Xiaomi devices are one of the most vulnerable components that can eventually fail due to mechanical damage, moisture or software failures. Sound problems can vary from a complete lack of sound to distorted bass frequencies or cod in speakers. It is important to understand that the diagnosis of speakers on Redmi smartphones, POCO or Mi TVs requires different approaches — there is no universal method.

In this article, we will discuss 5 working ways to check speakers, including hidden diagnostic menus, test calls and specialized applications, you will learn how to distinguish hardware from software failure when it is enough to reboot and when it is time to carry the device to the service. Special attention will be paid to models with dual stereo speakers (for example, Xiaomi 13 Pro or Redmi Note 12 Pro).+), where the problem may be in one of the modules.

1. Quick check through standard functions

Before you get into the technical details, start with basic tests that will help you rule out obvious problems without having to resort to complex manipulations.

On Xiaomi smartphones, follow the following steps:

• 📞 Test call: call another phone or use the command ##4636## (in some models opens the test menu). If the person hears you and you don't, the problem may be in the upper speaker (conversational).
• 🎵 Music playback: Play the track through the standard Music app and check the sound at maximum volume. Notice distortion or lack of sound in one of the speakers (on models with stereo sound).
• 🔔 Notifications and alarms: set an alarm or ask a friend to send you a message. If the notifications sound and there is no music, the system's media profile is a problem.

For Mi TV or Redmi TV:

• 📺 Built-in tests: go to Settings → Sound. → Speaker diagnostics (not available on all models) If not available, play YouTube videos at different frequencies (e.g., 20-20000 Hz test).
• 🔊 Headphone connection: if there is sound in the headphones and there is no sound in the speakers, it is a hardware problem. If there is no sound anywhere, check the audio output settings in Settings → Sound. → Sound output.

⚠️ Note: On some models POCO (for example, POCO F5) post-refresh MIUI You may lose sound in the lower speaker. Before diagnosing, check if it's turned off in the developer settings (Settings) → The phone. → Version. MIUI — Tap 7 times to unlock).

2.Diagnostics through Engineering Menu (CIT)

The CIT (Customer Engineer Test) allows you to test hardware components, including speakers, without third-party applications, a technique that works on most Xiaomi smartphones, but may not be available on new HyperOS models.

To open the menu:

1. Open the Phone app.
2. Enter the code ##4636## or #284## (for the speaker test).
3. Choose Audio or Speaker Test (the name may be different).
4. Press Start Test – the device will consistently check the top and bottom speakers.

Test results:

• ✅ PASS: speaker.
• ❌ FAIL: hardware malfunction (required repair).
• ⚠️ No Response: Problem with connecting the speaker to the motherboard (possibly the plume has departed).

⚠️ Attention: On Mi TVs TV Q2 And the newer engineering menu is blocked for users, and trying to enter codes can lead to resetting to factory settings.

3. Use of third-party applications

If standard methods fail, use specialized utilities that offer more advanced diagnostics, including frequency range and stereo balance checks.

Top.-3 speaker testing applications:

• 🔧 Phone Doctor Plus (Android): Checks both speakers, microphone and vibration. Supports Xiaomi models with HyperOS.
• 🎛️ Speaker Test: generates test signals of different frequencies (from 20 Hz to 20 kHz), helps to detect distortions.
• 📊 TestM: a comprehensive test of all sensors, including speakers, and there's a left-right-channel comparison feature.

How to test in Phone Doctor Plus:

1. Install the app from Google Play.
2. Run the Speaker test.
3. Follow the instructions: the app will play sounds through each speaker individually.
4. If the sound is not in one of the channels, a warning will appear on the screen.

For Mi TVs, TV Speaker Test (available from the Mi App Store) can be used to analyze the amplitude frequency (FR) of the speakers and detect defects in the membrane or magnetic system.

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If the app doesn’t detect the bottom speaker on the Redmi Note 12 Pro+, try rebooting the device with the volume button clamped down – this will reset the sound driver.

4. Check for hardware damage

If software tests show no problems, but the sound is still missing or distorted, it could be physical damage.

For smartphones:

• 🔍 Contamination speaker: dust or fibers of fabric can block sound. Examine the speaker grille with a magnifier. Clean it with a soft brush or compressed air (do not use sharp objects!).
• 💧 Moisture: If the device came into contact with water, corrosion could damage the speaker's contacts, signs of green plaque on the connector (visible when disassembled) or periodic loss of sound.
• 🔌 Trained: common problem after falls, speaker may work intermittently or not at all, solved only in the service center.

For TVs:

• 🔊 Membrane damage: If the sound is wheezing or there are no high frequencies, the diffuser membrane is probably torn.
• 🔥 Overheating: speakers in Mi TV They can fail because of prolonged operation at maximum volume, and check if the back panel is warming in the speaker area.
• 🎛️ Amplifier problems: If there is sound, but it is very quiet even at maximum, the sound amplifier is to blame (often fails on Mi models). TV 4S).

How to check the plume speaker on the smartphone without disassembly:

1. Place the device on a flat surface.
2. Lightly press the area around the speaker (for example, on the lower part of the case of the Redmi Note 11).
3. If the sound appears or changes, the problem is the contact of the plume.

5. Diagnostics via ADB (for advanced users)

If you're familiar with Android Debug Bridge (ADB), you can do a deep sound subsystem check, which is a technique that works for Android TVs and smartphones.

Instructions:

1. Install ADB Tools on your PC.
2. Turn on USB Debugging on your device (Settings → About Phone → MIUI version – tap 7 times, then go back to Additional Settings → For Developers).
3. Connect the device to the PC and execute the command: adb shell dumpsys media.audio_flinger It will list all active audio devices and their status.
4. To test the speaker directly, use: adb shell am start -a android.intent.action.VIEW -d "file:///system/media/audio/notifications/OnTheHunt.ogg" (replace the path with any system sound file).

What to look for in the withdrawal of commands:

• status: active: the speaker is recognized by the system.
• status: standby – the speaker is connected but not used (possibly disabled software).
• Error: -19 - hardware error (often meaning circuit break)

⚠️ Attention: On Mi TVs TV PatchWall debugging USB It can be disabled by default. It requires you to reflash the device with the bootloader unlocked to activate it.

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If the dumpsy team media.audio_flinger It shows the speaker as unavailable, but it's physically intact -- the driver problem. MIUI/HyperOS.

6. When to contact the service

Not all sound problems can be solved on your own, but here are some signs to contact Xiaomi’s service center:

• 🔧 Physical damage: cracks on the body in the speaker area, traces of oxidation on the connectors (visible during disassembly).
• 🔥 Smell of burning: if the device smells of scorched plastic, most likely burned the sound amplifier.
• 📉 Gradual deterioration: The sound became quieter over a few weeks - a sign of wear and tear of the speaker.
• 🔄 Firmware does not help: if after resetting to factory settings and flashing the problem remains.

The cost of repairing speakers in Xiaomi (approximately):

Where to repair:

• 🏢 Official Xiaomi service centers: warranty repair (if the device is warranty), but long term (2-4 weeks).
• 📦 Self-replacement: suitable only for power users. Parts can be ordered on AliExpress (see model code for speaker, for example, 18040L-00190 For the Redmi Note 11).

FAQ: Frequent questions about Xiaomi speakers