Xiaomi TV turns on, there’s sound, and no images – what to do?

Why did the Xiaomi TV show disappear, but the sound remained?

You turned on the Xiaomi Mi TV TV, Did you hear the usual sound of a screensaver or a movie running, but the screen remained black? TV 4S, Mi TV 5, Mi TV Q1 And other series, both budget and flagship, can be attributed to hardware failures (from 60% of cases), firmware failures (25%) or incorrect settings (15%).

It's important to know if the black screen is completely black (backlights off) or if it barely shows the contours of the image in bright light? This is a key point for diagnosis. In the first case, the backlight or the power supply is to blame, in the second case, most likely a matrix or a plume. Next, we will analyze all possible scenarios, from the simplest to requiring intervention of the service center.

1. Checking the backlight: how to distinguish the burned LED other problems

The most common cause of black screens when sound is working is a backlight malfunction. Xiaomi TVs use a backlight. LED-It's a light that eventually degrades or burns up completely:

• 🔦 Hold the flashlight to the screen at an angle of 45-60 degrees. If you look closely you see a faded image (like on old monitors without backlighting), the problem is that you have a problem. LED.
• 💡 Light up in a dark room, and even a faint glow will tell you that the matrix is working and the backlight is not.
• 🔊 Listen to TV in silence: burnt out LED Sometimes they give off a slight crackle when turned on.

If the lighting doesn’t work, the reasons may be:

⚠️ Warning: Don't try to disassemble the TV yourself unless you have experience with high-voltage circuits.In Xiaomi power supplies TV voltage reaches 200-400 V, which is dangerous for life.

2. firmware failure: when the TV "goes blind" after the update

Software errors are the second most common cause of black screens, especially for Mi models. TV 4A mi TV 4C, squat MIUI TV It was the black screen of death» (BSOD). Typical scenarios:

• 🔄 The TV stopped showing the image immediately after the update (automatic or manual).
• 🖥️ The Xiaomi logo appears briefly on the screen, then blackness, but the sound works.
• 🔌 After the power outage, the TV turns on without an image.

The solutions depend on the degree of failure:

Try hard reboot (hold the power button for 15-20 seconds)

Recovery Mode (Recovery Mode) - Menu button + Power when powered on)

Install firmware through USB (file update.zip flash-drive)

Reset the settings to factory (Settings → About TV → Reset)

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If the TV doesn’t respond to buttons but there is sound, try a blind reset:

1. On the remote, press sequentially: Menu → Up. → Up. → Down. → Down. → Left. → Right. → Left. → Right. → OK.
2. Wait 30 seconds, the TV should restart.
3. If the reset is successful, you will hear the download sound. MIUI TV.

⚠️ Attention: On Mi models TV 5 Pro and a later blind reset can block access to the Fastboot. If after the procedure the TV does not turn on at all, you will need firmware through the Fastboot. USB OTG PC-assisted.

3.Disorders with the matrix and plumes: when the screen "died" physically

If the backlight is working (a dim image is visible when illuminated), but the picture is missing or distorted, the matrix or connecting plumes are to blame.

• 💥 They were either injured or injured (even if they were weak).
• 🌡️ Operated in conditions of high humidity or temperature changes.
• 🕒 Have been in the business for more than 5 years (natural wear of contacts).

Diagnosis:

1. Check the plumes: When you turn on the TV, slightly press the back cover in the area under the Xiaomi logo. If the image appears, the contact problem.
2. Look at the matrix: on the black screen, vertical or horizontal stripes, points of broken pixels can be visible.
3. Listen to the sounds: a damaged matrix sometimes gives a slight hiss.

Decisions:

4. Power supply: why the TV doesn't turn on backlight

The power supply (PS) in Xiaomi TVs is responsible not only for power supply, but also for controlling the backlight. If it fails, the screen remains black, although the sound and other functions work.

• ⚡ The TV is turned on only with 3-5 attempts.
• 🔥 From the body comes the smell of burning or plastic.
• 🔌 The power indicator flashes red or does not burn at all.

The most vulnerable elements of the power supply:

1. Capacitors – swell or flow (especially in Mi models) TV 4A until 2020).
2. Transistors - break through when voltage surges.
3. Safety locks burn out with a short circuit.

Diagnosis:

1. Turn off the TV for 10 minutes, then turn it on. If you see an image, the problem is that the PD is overheating.
2. Check the voltage at the output of the block (should be 12V-24V depending on the model).
3. Check the charge for blackened tracks or bloated capacitors.

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If the TV turns on after only a few attempts, try plugging it in via a voltage stabilizer. Network surges are a common cause of power supply failures in Xiaomi TV.

5. Settings reset: When user settings are to blame

Sometimes the black screen occurs due to incorrect image settings, especially after connecting external devices (set-top boxes, PCs, sound systems).

• 🎮 Incompatible permission was granted for HDMI (for example, 4K@120Hz on a model that supports only 60Hz).
• 🔊 In the sound settings activated mode ARC (Audio Return Channel, which is in conflict with the video.
• 🖥️ Game Mode with incorrect synchronization parameters is enabled.

How to reset settings without an image:

1. On the remote, press Menu. → Settings → All settings → System system → Resetting image settings (sequence may vary depending on the model).
2. If the remote doesn’t work, use buttons on the TV body: it’s usually a combination of Menu. + Volume Down, held for 10 seconds.
3. To reset completely to factory settings, press the Power for 15 seconds, then select Wipe Data from the recovery menu (navigate volume buttons).

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If the black screen appears after connecting an external device (for example, Xiaomi Mi Box or the other device). NVIDIA Shield, turn it off first and restart the TV. That's how the problem is solved in 30 percent of cases.

External devices and cables: checkable HDMI, AV, USB

A black screen when sound is running can be caused by a fault in external devices or cables.

• 📺 HDMI-cable is damaged or does not support the required resolution (especially relevant for the HDMI 2.1 on Mi TV Q2).
• 🎧 The sound system is connected through ARC and conflicting with video output.
• 🖱️ USB-device (flash drive, keyboard) causes the system to freeze when booting.

How to check:

1. Turn off all cables from the TV (HDMI, AV, USB, optical).
2. Turn on the TV – if the image appears, connect the devices one at a time to identify the “culprit”.
3. Check the cables for physical damage: bending, melting, oxidation of contacts.

If the problem is HDMI-port:

• Try another port (on Xiaomi) TV usually 2-3).
• Update the TV firmware – there were recognition bugs in the old versions HDMI 2.0.
• In the settings HDMI (Settings → Connected devices) select the mode PCM auto.

7.When to contact the service: signs of serious breakdowns

Some faults cannot be repaired by yourself. Contact the service center if:

• 🔥 The TV smells like a burn or the body heats up in one place.
• ⚡ After switching on, clicks or cracks are heard (a sign of a breakdown of capacitors).
• 💥 Vertical stripes or spots are visible on the screen even when illuminated.
• 🔄 The TV is cyclically rebooted (sound appears, then disappears).

The cost of repair in official Xiaomi services (in Moscow, 2026):

Before the service visit:

1. Take a picture of the TV serial number (on the back sticker).
2. Keep a check or a warranty card (if any).
3. Write down the model and firmware version (you can find out from the audio menu if the TV reacts to the remote).

FAQ: Frequent questions about the black screen on Xiaomi TV