Disidiming on Xiaomi: A Complete Guide to Setup on Mi TVs

If you own a Xiaomi Mi TV and notice that the picture seems too bright or contrasting in dark scenes, the problem may be in the dissiding (dimming), which dynamically adjusts the backlight of the screen, improving the black color and depth of the image, without which even premium Xiaomi QLED or OLED models can lose in realism.

In this article, we will discuss what disidiming is, why it is needed, and most importantly, how to turn it on Xiaomi TVs of different series, you will learn what settings are responsible for this feature, how to avoid typical activation errors, and what to do if the option does not appear on the menu, and we will compare how disidiming works on Mi TV 4S, Mi TV Q1 and flagship Xiaomi TV 6 – this will help you to understand whether to update the firmware for its appearance.

What is disidiming and why is it needed on Xiaomi TV?

Dimming is a screen backlight control technology that allows you to point-to-point adjust the brightness of different areas of the matrix. In Xiaomi TVs, it comes in two variations:

• 🔹 Local Disidiming – used in Full Array models LED (Like Mi. TV Q1 Here the backlight is divided into hundreds of independent zones, which may be dimmed or lightened separately, improving contrast.
• 🔹 Global disidiming – occurs in budget models (e.g. Mi). TV 4A). Here, the brightness is regulated evenly across the screen, which is less efficient, but still useful.

The main advantages of disidiming:

• 🌑 Deep black – in dark scenes (for example, in films with night shootings), the screen does not “glow” in gray, but shows real black.
• 👁️ Less load on the eyes - there is no uniform illumination, which reduces fatigue during prolonged viewing.
• 🎬 More realistic HDR — The technology unlocks the potential of Dolby Vision formats and HDR10+, dimensionalize.

But there are downsides: when you have aggressive disidiming settings, you can see artifacts like "blooming" (blurred light halos around bright objects) or flickering in dynamic scenes, so it's important to adjust the balance correctly.

⚠️ Attention: OLED-Xiaomi TVs (e.g. Mi TVs) TV OLED) Disidiming works differently, where each pixel is a light source, and turning on this feature can cause pixel burnout to accelerate if the brightness is kept at maximum for a long time.

What Xiaomi models support disidiming

Not all Xiaomi TVs are equipped with this technology, and below is a table with disidiming support in popular models (relevant for firmware 2023-2026):

If your model didn’t make the list, check the specifications on Xiaomi’s official website or on the TV menu along the way Settings → Device → Model. It’s also worth considering that even in supported models, disidiming can be hidden in the engineering menu – we’ll talk about this later.

Where to look for disidiming settings in Mi TV

Depending on the model and firmware version of MIUI TV, the path to disidiming settings may vary.

Method 1: Using the standard menu (for most models)

1. Open the settings (cog in the upper right corner).
2. Go to the display and sound → Picture.
3. Select Additional → Local dimming (or Dimming).
4. Activate the slider or select the intensity level (usually Low, Medium, High).

If there is no Local Dimming, try changing the Mode to Movie or HDR – sometimes the option only appears in these profiles.

Method 2: Through the Engineering Menu (for hidden settings)

On some models (e.g., the Mi TV 4S with outdated firmware), disidiming is hidden in the service menu.

1. On the remote, press sequentially:


Menu → Settings → All Settings → General → Device Preferences → About → Press 5 times on “Model”.




2. The engineering menu will open. Go to the section:




Picture → Local Dimming → Enable the option.

⚠️ Attention: Changing the settings in the engineering menu can cause the image to crash. Don't change other settings unless you're sure of their purpose. For example, Backlight Duty affects the brightness of the backlight - it's better not to touch it.

Check the TV model for support function|

Update the firmware to the latest version|

Remember the current picture settings (take pictures)|

Connect the TV to a stable power source-->

Step-by-step: how to turn disidiming on Xiaomi TV

Consider a universal disidiming activation algorithm, taking into account the nuances of different models, follow the instructions strictly by steps to avoid errors.

Step 1: Check the current version of the firmware

Outdated software can block access to disidiming functions to check the version:

1. Open Settings → About the device → Update the system.
2. If the version is older than MIUI TV 3.0 (for models 2022+), update the firmware via the Internet or manually (download the file from the official website).

Step 2: Selecting an Image Mode

Disidiming often only works in certain modes.

• 🎥 Movies are optimal for movies (maximum contrast).
• 🌈 HDR — If you are looking for Dolby Vision support.
• 🎮 The game is for consoles (but disidiming here can add a delay).

Avoid Standard mode – it usually turns off the function.

Step 3: Activate and configure disidiming

After the regime has been chosen:

1. In the Image → menu, additionally look for Local Dimming (or Dynamic Contrast on older models).
2. Enable the function and select a level: 🔘 Low – Minimum dimming, suitable for day viewing. 🔘 Average – balance between contrast and naturalness. 🔘 High – maximum effect, but artifacts are possible.

black-and-white

💡

If irritating flickers appear after disidiming, try lowering the level to Low or disable the Auto Brightness function in the display settings.

Step 4: Checking the Results

To assess the effect of disidiming:

1. Include videos with dark scenes (for example, an episode from Game of Thrones with night shooting).
2. Compare the picture with disidiming off and on, paying attention to the: 🔸 Black Depth (should be closer to absolute black). 🔸 Lack of grey “smoke” in dark areas. 🔸 Natural transitions between light and dark zones.

Typical problems and their solutions

Even when you set it up properly, disidiming can work incorrectly, and let's look at the most common mistakes and how to fix them.

Problem 1: Disidiming is turned on, but the picture flickers

This is typical for models with global disiming (for example, Mi TV 4S).

• 🔌 Unstable power supply – connect the TV to another source (not via an extension cord).
• 📺 Low refresh rate – set 60 Hz or 120 Hz in Settings → Display. → Frequency of update.
• 🎛️ Conflict with other features – disable Autobrightness and Dynamic contrast.

Problem 2: There is no item on the menu called "Local dimming"

Possible solutions:

• 🔄 Update the firmware (see instructions above).
• 🔧 Activate Developer Mode: Go to Settings → About the device → Version. MIUI TV. Click on the line with the version 7 times in a row until the notification appears. → Additionally. → For developers and enable debugging by HDMI.

firmware

MIUI TV Mod

Problem 3: Disidiming works, but light halos appear (blooming)

This is typical of Full Array. LED-TVs (e.g. Mi) TV Q1). To reduce the effect:

• 📉 Reduce disidiming levels to Medium.
• 🎭 Turn on Movie Mode – It uses softer processing algorithms.
• 🔍 Check the angle of view - the blooming is more noticeable when viewed from the side.