Broken pixels on the Xiaomi TV screen are a problem that even new device owners face. Some defects are noticeable immediately: black dots on a light background or constantly burning color pixels. Others only appear under certain conditions, such as when watching dark scenes in movies. In this article, we will discuss how to identify all types of matrix defects (dead, hanging, hot pixels) using embedded tools, third-party applications and online services.
It is important to understand that even new Xiaomi TVs (Mi TV A2, P1, Q2, etc.) allow 1-3 bit pixels per million, which is not considered a marriage by manufacturers standards. However, if there are more defects, or they are located in the center of the screen, this is a good reason for returning under warranty, we will show how to document the problem to contact the service center, including screenshots and video recordings of tests.
All methods in this article are matrix-safe and do not require disassembly of the device. But before you start checking, make sure that the TV warms up (at least 30 minutes) - this will eliminate false positives due to cold start. OLED- or LED-panels.
1.What are broken pixels and what are the types
A broken pixel is a broken or malfunctioning matrix element that appears as a dot on the screen, depending on the type of defect, the following are distinguished:
- 🔴 A dead pixel is always black, it doesn't glow. OLED-screens (e.g. Xiaomi) OLED Vision, where each pixel is individually illuminated.
- 🟢 Hot pixels -- they're always on the same color (red, green, blue). LED-light-panel.
- 🔵 Damaged subpixel - manifests as a colored dot on a gray background (e.g., purple or turquoise) occurs when one of the three subpixels is damaged (RGB).
Xiaomi. TV permittingly 4K (3840×2160) One broken pixel takes up just one. 0,00005% It's a very large area, but it can be very annoying when you're viewing content, and it's particularly critical in the central area, where you're usually subtitling or you're using a Smart interface. TV.
Manufacturers often refer to the ISO 13406-2 standard, which resolves up to 5 defects of class 1 (brightly pronounced) per million pixels. For Xiaomi Mi TV 55, this means the permissibleness of up to 10 bit pixels without the right to replace. However, Russia has its own rules - under the law "On consumer protection", even 1 defect can be a basis for return if it interferes with operation.
⚠️ Attention: OLED-TVs (e.g. Xiaomi) OLED Vision 65" broken pixels are often confused with matrix burnout - when the screen remains traces of static elements (channel logos, navigation panels).
Preparation of the TV for inspection
Before testing, follow 5 mandatory steps to ensure that the results are accurate:
- Turn off post-processing. Go to Settings. → Picture → Additionally and deactivate options: 🎨 Noise suppression 🌈 Color enhancement 🔍 Local Dimming (Local Dimming)
Set up a native permit.
Settings → Screen → Resolution
3840×2160 (4K)
1920×1080 (Full HD)
Calibrate the brightness.
50%
Use it. HDMI-entrance.
Android TV
Turn off the outside lights.
For models with AMOLED-screens (e.g. Xiaomi Mi) TV LUX) additionally turn off Adaptive Brightness and Mode of the movie – they can mask defects due to dynamic illumination.
Post-image processing disabled|Native permit established|Brightness = 50%|Connection to HDMI|The room is darkened-->
If you check the TV before you buy in a store, ask the seller to reboot the device (Settings → Device → Reboot).This will reset temporary artifacts that can mimic broken pixels.
3. Method 1: Built-in screen test in Xiaomi TV
All Xiaomi TVs based on Android TV or Google TV have a hidden screen diagnostic mode, which allows you to display uniform colors to detect defects.
- Open the settings (cog on the remote).
- Go to the Device. → On TV.
- Press OK on the remote 5 times in a row on the item Model.
- In the menu that appears, select Screen Test.