How to check the performance of the Xiaomi TV: all the ways from the service menu to the ADB

Buying a used Xiaomi TV is always a risk of running into a device with years of experience that is about to fail. Even new models after several years of heavy use can start to “glut”: overheat, spontaneously turn off or lose the brightness of the screen. The TV’s performance is a key parameter that shows how many hours the device has worked, and directly affects its residual life.

Unlike smartphones, where battery life can be checked through standard settings, Xiaomi TVs (including the Mi series) TV 4/5, Redmi Smart TV mi TV Q: This information is hidden. The manufacturer doesn't advertise it, but you can access the data in a number of ways, from simple (via apps) to advanced (via apps). ADB). In this article, we will analyze all current methods with step-by-step instructions, nuances for different models and decoding the obtained data.

Important: the amount of time you're working is measured in hours of work, not in number of turns, for example, if a TV has been running 30,000 hours with an average use time of 5 hours a day, its real age is about 16 years old, but even 10,000 hours (≈5 years) can be critical for low-cooled models.

1. Checking the performance through the service menu (without PC)

The fastest way is to use the hidden service menu available on most Xiaomi Android TVs. TV. This method does not require you to connect to a computer or install additional programs, but it does not work on all firmware (especially on newer versions). MIUI TV).

To open the service menu:

1. Turn on the TV and wait for the main screen to load.
2. On the remote, press sequentially: Settings → The device → On TV. → Click 5 times on the line "Model"
3. If the combination does not work, try an alternative path: Settings → All settings → The device → On TV. → Press and hold the button "OK" 10 seconds

In the menu that opens, look for Panel On Time or Total Power On Time, which is what you've learned in a watch. TV 4A, Redmi TV 70) the data may be displayed in format XX:XX:XX:XX (days: hours: minutes: seconds).

⚠️ Attention: On TVs with firmware MIUI TV 3.0 and later service menus may be blocked. ADB or third-party applications.

If there is no data on the service menu, but there are Backlight Hours items or LED Hours is the screen backlight time, which is usually less than the total on time, since it only takes into account periods of active use (not standby).

Check the firmware version in Settings → About TV

Update the TV to the latest version

Try another remote (original, not universal)

Use it. ADB (instruction)-->

2.Use of ADB (for advanced users)

ADB (Android Debug Bridge is a debugging tool for Android devices that allows you to access hidden data, including workflow.The method works on all Xiaomi models, but requires connecting the TV to the PC and installing drivers.

Step-by-step:

1. Download Platform Tools (the official Google package) and unpack the archive.
2. On the TV, turn on the debugging. USB: Settings → The device → Special facilities → For developers → Debugging by USB If there is no "For developers" item, activate it by clicking 7 times on the line "Build Number" in the section "About TV.
3. Connect the TV to the PC via USB-cable (use the port) USB 3.0 on TV for stability).
4. Open the command line (cmd) in the folder with Platform Tools and execute the commands: adb devices (should display the name of your TV) adb shell dumpsys power

In the conclusion of the command, look for the lines:

• mScreenOnTimeMs is the screen life in milliseconds (divided by 3.6 million to translate into hours).
• mTotalPowerOnTimeMs is the total time of the TV.

Example of conclusion:

mScreenOnTimeMs = 129600000 (36 hours)


mTotalPowerOnTimeMs=18000000050 hours

⚠️ Note: On some models (Mi) TV Q2 75") The dumpsys power command may not show performance. In this case, use the alternative command: adb shell cat /sys/class/backlight/panel0/backlight/panel_on_time

💡

If ADB does not recognize the TV, try disabling the Windows firewall or using another USB-cable (original, without adapters).

3. Applications for verification of work (without root)

If you don't want to mess with ADB, You can use third-party apps from Google Play. They do not require a PC connection, but they may show incomplete data (for example, only screen time, not total turn-on time).

Top.-3 tested applications:

• 📊 TV Info shows the backlight hours and firmware version. TV 4/5 Redmi Smart TV.
• 🔍 AIDA64 — In the Display section, you can see Panel On Time, and you need permission to access system information.
• ⚙️ Device Info – a universal application for Android TV, Shows the experience in the Hardware section.

How to install the app on Xiaomi TV:

1. Download. APK-file USB-drive (for example, from the APKPure website).
2. Connect the flash drive to the TV and open the File Manager.
3. Launch the installation APK, Pre-allow installation from unknown sources: Settings → Security and limitations → Unknown sources

Limitations of methods:

• Applications may not show performance on new firmware (MIUI TV 4.0+).
• Backlight Hours data are usually underestimated by 20-30% compared to actual operating time.

4. Data decoding: what do the hours of operation mean

Once you get the numbers, it’s important to interpret them correctly. The average life of Xiaomi TVs depends on the type of matrix and cooling system:

Examples of interpretation:

• If you don't. TV 4A It shows 15,000 hours. ~4 years using 10 hours a day TV in good condition but worth checking cooling.
• Redmi Smart TV 22,000 hours - close to critical threshold, reduced brightness and avoiding long sessions (more than 6 hours in a row).
• Mi TV Q2 50,000 hours -- still a long way from wear, but OLED-The matrix may have burned out areas (check on a monotonous background).

Critical information: Xiaomi TVs with over 80% of the average lifetime (see table) have a high risk of failure within a year. TV 5 Pro is this ~40,000 hours.

5. Alternative methods of assessing wear

If you can not get data on the development failed, you can assess the state of the TV by indirect methods:

🔹 A test for broken pixels:

• Open monochromatic screensavers (black, red, blue) on your TV via YouTube or the Dead Pixel Test app.
• Broken pixels (white / colored dots) - a sign of wear of the matrix, especially relevant for TVs with a working time >20,000 hours.

🔹 Overheating check:

• Turn on the TV for 2-3 hours at maximum brightness.
• Touch the back panel in the CPU area (usually on the left).°C - the cooling system is worn out.

🔹 Speed analysis:

• Run a heavy app (like the Asphalt 9 game from Google Play).
• Slowdowns, hangings or artifacts of graphics indicate the degradation of the chipset (typical for TVs with workout). >30,000 hours).

🔹 Checking the backlight:

• Turn on the TV in full darkness on a white background (for example, via Settings). → Screen. → Color temperature → Warm).
• Uneven backlight (dark spots in the corners) - a sign of wear LED-TVs that are over 5 years old.

💡

Indirect signs of wear do not replace data on the workout, but help to assess the state of the TV, if access to the service menu or service. ADB impossible.

6. Frequent mistakes and how to avoid them

When checking the work of users often encounter problems.

🚫 Error 1: The service menu will not open

• Reason: New firmware blocks access or uses a non-original remote.
• Solution: Update your TV to the latest version of the software or use it ADB.

🚫 Mistake 2: ADB doesn't see TV

• Reason: Drivers not installed, firewall turned on or damaged USB-cable.
• Solution: Install Google Drivers USB Driver and try another port.

🚫 Error 3: Apps show zero operating time

• Reason: The firmware dropped the counters after the update or the application is incompatible with the model.
• Solution: Check the workflow through ADB service-menu.

🚫 Error 4: Data in the service menu reset after the update

• Reason: Xiaomi sometimes resets counters with major updates (for example, when switching from the mainframe to the mainframe). MIUI TV 2.0 to 3.0).
• Solution: Check the date of the last update in Settings → If you've just zeroed in on your TV, add the time since you've updated to your current data.

⚠️ Note: On Xiaomi TVs with firmware MIUI TV 4.0+ And the data can be stored in encrypted form, and in this case, the only reliable way is to use it. ADB root rights (which cancels the warranty).

7. How to lose work (and whether it is worth it)

Some users try to reset their operating meters before selling a TV, which is technically possible, but has serious consequences.

✅ Discharge methods:

• Through ADB Download: Adb shell su echo 0 > /sys/class/backlight/panel0/backlight/panel_on_time (Requires unlocking the bootloader and installing Magisk).
• Menu (not available on all models): Settings → For developers → Resetting counters

❌ Why you shouldn't do that:

• Reset does not affect the actual wear of components (matrix, capacitors, LED-lighting).
• On new firmware, Xiaomi can block the TV for trying to change system files.
• When selling an experienced buyer will suspect fraud and check the TV through the ADB wear-and-wear.

🔧 What to do instead of dumping:

• If the TV is really in good condition, provide the buyer with checks, warranty card or screenshots of the diagnosis from the AIDA64.
• To extend the life of the TV, reduce the brightness to 70-80% and use energy saving modes.

💡

Resetting the work is a scam and a risk of losing the warranty, and honesty in selling used equipment is always better in the long run.

FAQ: Answers to Frequent Questions