Why Xiaomi TV is Smoking: 7 Reasons and How to Eliminate Sound by Yourself

You've turned on Xiaomi Mi. TV, Redmi Smart TV model P1, But instead of hearing the usual sound, you heard a piercing squeak, which can indicate both a harmless software failure and a serious hardware malfunction. In 80% of cases, the source of squeak is a power supply, but the culprits can also be a matrix, speakers or even firmware. In this article, we will examine all possible causes, from banal overheating to critical breakdowns that require the intervention of the service center.

It is important to understand that the nature of the squeak plays a key role in diagnosis: continuous high-frequency sound is usually associated with electronics, periodic clicks are associated with the power unit relay, and squeaking when turned on and then turned off can signal a short circuit. We have collected up-to-date data on models from 2020 to 2026, including Mi. TV Q2, Redmi X50 and P1E, To help you identify the problem accurately.

If the TV is beeping but it's working, you have a chance to fix the problem yourself, and if the screen isn't turning on or the image is distorted, you better stop trying to repair it and contact the service, and then we'll go into each scenario in detail, starting with the simplest solutions.

1. Overheating of the power supply is the most common cause of squeak

In 65% of cases, squeak in Xiaomi TVs is caused by overheating of the power supply (PD), this is due to the design features of budget models, where compact but less efficient radiators are used to save space. With prolonged work or in a stuffy room, the temperature inside the body rises above 70-80°C, which leads to:

• 🔥 The whistling of the throttle is a high-frequency squeak, resembling the sound of a boiling kettle, most often heard when turned on or after several hours of operation.
• ⚡ Relay clicks are periodic sounds that look like crackling, indicating unstable stress due to overheating of the capacitors.
• 💨 Activation of protection – the TV can spontaneously turn off if the temperature of the PD exceeds 90°C.

The problem is especially relevant for models with passive cooling (without a fan): Redmi Smart TV X50, Mi TV 4A mi TV 4S. In more expensive series (Q2, P1) improved radiators are used, but even they are not immune from overheating when used improperly.

⚠️ Warning: If you squeak with the smell of burning or smoke, immediately disconnect the TV from the network! This is a sign of capacitors or transistors burning in the power supply!

To eliminate overheating:

1. Turn off the TV and let it cool for 1-2 hours.
2. Check the vents on the back panel – they should not be clogged with dust.
3. Make sure that the TV is on a flat surface with a gap of at least 5-10 cm from the wall.
4. Avoid placing near batteries or other heat sources.

2. Power supply failures: capacitors, transistors, resistors

If the squeak doesn't go away even after the TV is cooled, the problem lies in the hardware malfunction of the power supply. TV most often:

Self-diagnosis of the power supply is possible, but it requires caution.

Remove the back cover (by disconnecting the TV from the network!)

Check the board for swollen capacitors or darkened resistors

Turn the capacitors – if they “walk” in the grooves, they need to be replaced

Check the soldering joints for microcracks

Use a multimeter to check voltages (for power users only!)-->

If you don't have experience with electronics, it's best to contact the service.Average cost of repairing a power supply unit in Xiaomi TV — It is between 1500 and 4000 rubles, depending on the model and the complexity of the breakdown, and in some cases it is cheaper to replace the entire unit than to repair it.

3. Matrix problems: squeaking when the image is turned on

Less often, but still there are cases when squeaking in Xiaomi TV This is caused by a malfunction of the matrix or its power chains:

• 📺 The matrix backlight is faulty - squeak occurs when you try to turn on the screen, but the image does not appear (black screen with or without backlighting).
• 🔌 Problems with plumes – periodic crackling when brightness or contrast changes.
• 💡 The exit LED-drivers – high-frequency whistle, which increases with increasing brightness.

Diagnosing the problem with the matrix can be based on the following signs:

• The TV is turned on, but the screen remains black (the sound works).
• The image appears only 5-10 minutes after turning on.
• On the screen, vertical or horizontal stripes are visible.
• The brightness spontaneously changes, accompanied by squeak.

In most cases, repairing the matrix is not cost-effective — it costs 50-70% of the cost of a new TV. TV Q2 75", P1 65), where the replacement of the matrix can be justified. If the TV is warranty, contact the official service Xiaomi - in 2026 matrix defects are recognized as a warranty case.

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If the squeak only appears at a certain brightness, try to lower it to 70-80% in the settings, which in some cases temporarily solves the problem until you contact the service.

4. firmware failures and software errors

In 15% of cases, squeaking on Xiaomi TVs is caused by software failures, especially after a firmware update. TV (Mi TV Q1, P1, Redmi X50), where errors in the code can lead to:

• 🤖 Driver conflict – Squeaking occurs when certain apps are launched (e.g. Netflix or YouTube).
• 🔄 The looped sound signal – the TV beeps at intervals of 1-2 seconds, regardless of the user’s actions.
• 📱 Work failures HDMI-ports - squeak occurs when external devices are connected (prefixes, sound panel).

To rule out a programmatic cause, follow the following steps:

1. Restart the TV through the menu: Settings → The device → Reboot.
2. Reset the sound settings to factory: Settings → Sound. → Resetting settings.
3. Check for firmware updates: Settings → On TV. → Updating the system.
4. If the squeak appears after the update, try rolling back to the previous version (instruction below).

For rollback firmware on Xiaomi TV:

1. Download the desired version of the software from the official Xiaomi website (Support section).


2. Save the file to the flash drive in FAT32 format (file name should be update.zip).




3. Insert the flash drive in the USB- port of the TV.




4. Go to Settings → About TV → Update via USB.




5. Follow the instructions on the screen.

⚠️ Attention: Firmware rollback can lead to data loss (saved apps, accounts).On Xiaomi models 2023-2026 (Mi) TV Q2, P1 Pro) rollback is possible only through the service menu, access to which requires authorization.

5. Problems with speakers and audio track

If the squeak comes directly from the TV's speakers, rather than the body, the problem is the audio system.

• 🔊 Speaker damage - squeaks increase as volume increases, often after a TV drop or moisture hits.
• 🎛️ Audio processor failure: the sound is distorted, there is extraneous noise. TV Q2, P1E).
• 🔌 Short circuit in the audio circuit - squeak is accompanied by a crackling and loss of sound.

For diagnosis:

1. Connect to the TV external speakers or sound panel through HDMI ARC If the squeak is gone, the problem is the TV speakers.
2. Run the sound test in the menu: Settings → Sound. → Dynamics test.
3. Try to turn off all sound effects: Settings → Sound. → Sound modes → Standard.

If the speaker is damaged, it will cost 1,000-3,000 rubles depending on the model. Xiaomi services often offer to replace the entire sound bar, which can be more expensive.

External causes: network interference, connected devices

Sometimes squeaking in Xiaomi TV It's not caused by internal malfunctions, it's caused by external factors:

• ⚡ Power quality — connect the TV to another outlet or through a filter. In some homes, old networks cause interference that causes whistles in the power supply.
• 📡 Wi-Fi and Bluetooth devices — turn off all wireless gadgets (earphones, smartphones, routers) and sometimes they create radio interference that is perceived as a squeak.
• 🎮 Connected devices – disconnect all cables (HDMI, USB, If the squeak is gone, there is a problem with one of the external devices.
• 🌡️ Humidity and temperature – high humidity (above 70%) can oxidize contacts, leading to extraneous sounds.

Pay special attention HDMI-Cheap or damaged cables can cause interference that the TV perceives as an audio signal. Try replacing the cable with a certified one (for example, High-Speed). HDMI 2.1).

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If the squeak only appears when you connect a particular device (like a gaming console), the problem lies in it, not in the TV.

7.When to contact the service: critical malfunctions

If none of these methods worked and the TV is still beeping, it is likely a serious hardware malfunction.

• 🔥 The squeak is accompanied by the smell of burning or smoke.
• ⚡ The TV does not turn on or spontaneously turns off.
• 📺 Artifacts appeared on the screen (stripes, spots, flickering).
• 💥 The peech became louder or changed its tone (for example, turned into a crackle).
• 🛠️ You don’t have experience with electronics, but you want to take down a TV.

Average repair prices in official Xiaomi services (2026):

Before the service visit:

1. Take a photo or record a squeak on video - this will help the master to quickly identify the problem.
2. Check if your model is guaranteed (most Xiaomi models are guaranteed) TV Guarantee for 12 months).
3. Check if there are any promotions or discounts for repairs on the official Xiaomi website.

FAQ: Frequent questions about squeaking on Xiaomi TVs