How to check your Xiaomi TV when buying: full instructions

Buying a new TV, especially from a popular brand like Xiaomi, always comes with the expectation of a high-quality picture and stable system operation. However, statistics from service centers show that a significant part of the calls are due to defects that could be detected immediately at the time of receipt of the goods. Visual examination and initial diagnosis in the store or at the courier is the only way to protect yourself from buying a defective device.

Many buyers make the mistake of relying only on the appearance of the box or the presence of a warranty card. In fact, the matrix, the most expensive and fragile component, can have hidden defects that only manifest themselves when turned on. Ignoring the inspection phase can lead to lengthy proceedings with the seller and waiting for repairs.

In this article, we will discuss in detail the algorithm of actions that will allow you to conduct a full diagnostic in 15-20 minutes, you will learn what nuances of the Android TV or Google TV interface you should pay attention to, how to find broken pixels without special equipment and why it is important to check the operation of each HDMI port right at the point of sale.

External inspection of the body and configuration

The first thing that starts to check any electronic device is to carefully examine the package and the body itself. The box should not have any marks of severe impact, dents or wetness. If the package has characteristic "bules" or it is skewed, this may indicate a fall, which is critical for the liquid crystal matrix.

Take out the TV and look carefully at the screen frame and back. Look for chips, scratches or cracks. Pay special attention to the corners: even a microscopic crack in the corner of the screen can grow over time and lead to black spots or stripes in the image. Mechanical damage is often grounds for denial of warranty service if not fixed in the acceptance certificate.

Check the package. The box should have a remote control (often with voice control Mi Remote), a stand (if not built-in), power cables and documentation. Make sure the remote has no button backlashes and looks new.

⚠️ Warning: If you find a chip on the screen frame or a crack on the matrix, do not turn on the TV. Turning on the device with a damaged screen can short-circuit or further destroy the matrix, making it impossible to return under warranty as for a "marriage on delivery».

Make sure the propellers of the mount (if removable) are tightened and have no unscrew marks, a marker that the device has not been used before.

Initial inclusion and matrix verification

Once the power cable is plugged in and the TV is flat, you can start the first switch on. Modern Xiaomi models (Mi TV, Redmi TV) usually have a status indicator that should catch fire or blink. When you first start up, the system will suggest you choose a language and connect to Wi-Fi.

The most important step is to check the matrix for broken pixels and lights. You don't have to carry a laptop with test pictures. You can run videos in your TV browser (or through the built-in YouTube app) with monochromatic colors: black, white, red, green and blue. Type "test screen" or "beat pixel test" into YouTube search.

Stand 1 to 1.5 meters from the screen and look at the image carefully.

• 🔴 Broken pixels are points that do not change color or are constantly lit white/black.
• 🟡 Clouding – Uneven backlighting, visible on a black background, especially at the edges.
• 🔵 Posterization – visible color transitions (banding) on gradients.
• 🟢 Artifacts – vertical or horizontal stripes, flickering.

Note that the ISO standard allows for multiple defective pixels, however, many large retailers will take the product back when even one broken pixel is detected in the first 14 days, unless this is contrary to local law.

Diagnostics of sound and operation of the operating system

Xiaomi TVs run on Android TV or Google TV. It's important to check not only the hardware, but also the software. When you first turn on, the system can take a long time to boot — this is normal for initial setup, but the interface should work smoothly, without hanging menus.

The sound is checked by playing video at different volumes. Make sure the speakers don't wheez at maximum volume and there's no extraneous noise or crack. The sound should be clean, without the effect of "stuttering" the audio.

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Turn on Adaptive Sound or Balance in your sound settings to see how the sound scene changes when you switch modes, and this will help you detect the wheezing of the speakers at low frequencies.

Check the remote response rate. Press Home, then Back, open a few apps. If the TV is more than 1-2 seconds late, it may indicate a problem with the processor or RAM. Also check the Wi-Fi module: try to connect to your network and run high-resolution (4K) video to make sure the connection is stable.

An important aspect is checking for updates. Go to Settings menu → About TV → System Update. If a new firmware version is available, it's a good sign that the device is fresh. However, if the system writes about an error when checking for updates or cyclically restarts when trying to update, it's an alarm.

Checking ports and external connections

The functionality of the I/O ports is often ignored when buying, and at home, half the connectors are not working. HDMI-cables and consoles, be sure to check each port HDMI.

Connect an external device (laptop, game console, or demo console) to each port HDMI Make sure the signal is stable, the image is not lost or flashing. ARC/eARC, If you are planning to connect the sound system.

Also check USB ports. Insert a flash drive with a video file (prepare a 4K HDR test video if possible) and try playing it through the built-in Mi Player or VLC player. This will check not only the physical integrity of the port, but also the processor's ability to decode heavy video files.

If the TV model is equipped with a Mini-Jack port for headphones or optical output, they are also worth checking by connecting the appropriate devices.

Testing of Smart-functions and remote control

Xiaomi's ecosystem is a smart one. Check out Google Assistant. Press the microphone button on the remote and ask a simple question, like "what's the weather?" or "open YouTube." The microphone should be able to pick up speech clearly from 2 to 3 meters away.

Check Bluetooth. Try connecting wireless headphones or gamepads. Go to Settings → Remotes and Accessories → Add accessory and search for devices. Successful pairing confirms that the Bluetooth module is working.

⚠️ Note: When checking the remote, look for an infrared port (if any) and a Bluetooth connection. If the remote is only point-blank or close, there may be a problem with the remote transmitter or TV receiver.

Don't forget to check the Mi Home app or Android TV Remote on your smartphone. Try to control your TV from your phone. It's not only a handy feature, but also a test of the network connectivity of the device.

Analysis of images in different modes

To make sure you have a picture, switch several modes of the image, which are usually in the Settings menu → Image → Image Mode. Test the Movies, Sport, Game and Standard modes.

In Game Mode, check for Input Lag. If you have the option to connect a console or PC, do a reaction test. For regular users, it is important to make sure that the mouse cursor movement (if connected) or menus do not float.

Pay attention to zoom. Turn on regular terrestrial TV (if you have an antenna) or low-quality video. A good Xiaomi processor should smooth out noise and make the picture clear. If the image at low resolutions looks like porridge with artifacts, this is a feature of budget models, but there should be no obvious processing defects (colored halos around objects).

Comparison of characteristics of popular Xiaomi models

When choosing a particular model, it is important to understand the differences in matrices and processors, as this directly affects what to check. Below is a table with key parameters to look at when diagnosing.

For matrix models OLED It is critically important to check the uniformity of the display of gray color at low brightness to exclude defects characteristic of organic LEDs. QLED-The models are given attention to the saturation of colors.

Frequently Asked Questions (FAQ)

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The main takeaway: Feel free to spend 20 minutes checking your TV in the store. The time spent testing the matrix, sound and ports will save you weeks of nerves and expectations at the service center in the event of a marriage.