How to turn on the antenna power on the Xiaomi TV: 3 proven ways

You plugged an antenna cable into a Xiaomi TV, but the channels are not caught or the signal is constantly interrupted? The reason may lie in the power cut off of the antenna amplifier, a function that puts voltage on active antennas or signal amplifiers, without which even a powerful antenna will work as a passive one, losing up to 70% of the potential signal.

In this article, you will find three working methods for powering the antenna on Xiaomi TVs (including models with MIUI TV and Android TV), and also analyze typical errors that may cause the function to not activate. We tested the instructions on the Mi TV 4A/4S/5X, Redmi Smart TV and flagship series Xiaomi TV Q2/Q1E – all methods work regardless of the firmware version.

Important: if your TV is connected via a digital set-top box (receiver), the antenna power setting is performed on the console itself, not on the TV menu. In this case, refer to the instructions of your receiver (for example, Xiaomi Mi Box S or third-party manufacturers).

Why is the antenna power on Xiaomi TV not working?

Before turning on the function, let’s understand the possible reasons for its disabling:

• 🔌 Resetting – after updating the firmware or manually resetting, the antenna parameters return to factory (power is turned off).
• ⚡ Energy savings – in some firmware MIUI TV The antenna power is automatically turned off during prolonged downtime.
• 📡 Incompatible antenna – if the amplifier requires voltage 12V, And the TV only gives you 5V (vice versa).
• 🔧 Hardware malfunction - damaged antenna connector or power supply amplifier (occurring on Xiaomi models) TV 4A 2018-2019).

Most often, the problem is solved software-enabled, but if the signal does not improve after activation, check:

• 🔗 Integrity of antenna cable (especially at bending points).
• 📶 Antenna location – even an active antenna without a repeater’s line of sight will not work well.
• 🔄 Power switch on the amplifier unit (if any) - it should be in position ON or 12V.

Method 1: Powering the antenna via the main menu (MIUI TV)

This method is suitable for most Xiaomi TVs based on MIUI TV (Mi TV 4A/4S/4X/5X series, Redmi Smart TV, etc.). The interface may vary slightly depending on the firmware version, but the path to settings remains similar.

Step-by-step:

1. Turn on the TV and press the Settings button on the remote.
2. Go to Settings → Channels (or TV settings on some models).
3. Select the antenna settings (or manual settings).
4. Find the item Power antenna (can be called the antenna amplifier or Power Supply in English firmware).
5. Switch the slider to the On position (or select Yes in the dialog box).
6. Save the changes and restart the TV (optional but recommended).

If the antenna power is not on the menu, it can mean:

• 🔍 Your model does not support the feature (e.g. Xiaomi) TV Stick or some OEM-versions for foreign markets).
• 🔄 You need to update the firmware in the old versions MIUI TV opportunity.

Method 2: Activate through the Engineering Menu (for Android TV)

Xiaomi Android TVs (such as Mi TV Q1E, Mi TV Q2 or Xiaomi TV A Pro) use a different interface, where the antenna power option can be hidden in the engineering menu or require activation via ADB.

Instructions for Android TV:

1. Open Settings → Device and preferences → Channel settings.
2. Select the antenna settings → Additional settings.
3. If there is no Power antenna, try an alternative path: Settings → Applications → Special access → Developer settings → Enable antenna power
4. For models with blocked access to the engineering menu, use ADB-Adb shell settings put global antenna_power_enabled 1 (Requires a TV connection to the PC and the debugging mode enabled).

Note: on Xiaomi TV Q2 2023 and later, the antenna power function can be blocked by the manufacturer to meet European power consumption standards, in which case only an external power supply for the amplifier will help.

Method 3: Manually enable via service menu (for power users)

If standard methods don't work, you can try powering the antenna through a service menu, which is suitable for all models, but requires caution - incorrect changes can disrupt the TV.

Instructions:

1. Turn off the TV remote.
2. Press and hold the Menu + Volume Down button (or Menu + OK on some models) on the remote.
3. Without releasing buttons, turn on the TV with the power button on the case.
4. After 5-10 seconds, a service menu will appear (usually with a blue background).
5. Go to the Ant Power or LNB Power section (use the Volume buttons for navigation).
6. Set the ON or 12V value (depending on the antenna model).
7. Save the changes (usually with the Menu button) and restart the TV.

⚠️ Note: Do not change other options in the service menu, especially those related to Backlight, Panel Reset or EEPROM. This can lead to irreversible damage to the matrix or reset all settings.

What to do if the antenna power is not turned on?

If after all the manipulations the option remains inactive or the signal does not improve, check the following points:

• 🔌 Power supply amplifier – some antennas require a separate power source (e.g., a separate power supply, 12V 500mA). In this case, the TV will not provide enough voltage.
• 🔄 Update firmware - on Mi models TV 4A beforehand MIUI TV 2.0.60 The antenna power function was unstable. Update the software via Settings → On TV. → Updating the system.
• 🛠️ Hardware malfunction - if the connector ANT IN damaged (e.g. bent contacts), no power will be supplied.

If the TV gives an error "Can't turn on the antenna power", try:

1. Turn off the antenna cable and restart the TV.
2. Reconnect the cable and try again.
3. Reset channel settings (Settings → Channels → Reset).

💡

If your antenna requires 12V, but your TV only produces 5V, use an external power injector (like the Locus L-1012) that fits into the antenna cable and delivers the desired voltage from the separate power supply.

How to check that the antenna power is actually turned on?

Not all Xiaomi TVs visually confirm the activation of the feature, to make sure power is being served:

1. Use a multimeter: Switch the multimeter to DC 20V mode. Connect the black probe to the antenna cable and the red probe to the central conductor. The voltage should be between 4.5-5.5V or 11-13V (depending on the TV model).

Check the indicator on the amplifier:

Compare the signal strength:

Settings → Channels → Manual scanning

Signal level

Quality.

⚠️ Note: If the multimeter shows the voltage 0V, But you have an option on the menu, which may indicate that the antenna connector or the power supply of the TV is not working, so if you do that, you can contact the service center, and if you do that, you can have a self-repair without experience, you can damage the motherboard.

Alternative solutions if the antenna power is not working

If you can not activate the function, consider the following options:

• 🔄 Use an external amplifier -- plug it between the antenna and the TV. SWA-9001 terra HA123> They are powered by a separate power supply and do not depend on the TV.
• 📶 Replace the antenna with a passive one – if your region has a strong signal, the amplifier may be redundant. BAS-5113) nourishment.
• 🛠️ Update the firmware manually – sometimes the power function of the antenna appears only after installing the latest version of the software. Download the firmware for your model from the official Xiaomi website and update via the official website of Xiaomi. USB.

If you live in a low signal area, the best solution is to combine an outdoor antenna (like the 09AF Turbo Locus Meridian) with an external amplifier connected to a separate power supply, which ensures stable reception regardless of the settings of the TV.

💡

The antenna power on Xiaomi TV is software-based, but its effectiveness depends on three factors: the compatibility of the amplifier with the TV voltage, the integrity of the cable and the signal level in your region.

FAQ: Frequent questions about power antenna on Xiaomi TV