Owners of modern Smart TVs often face a situation when the list of channels is empty after connecting the antenna or the search is interrupted with an error. Xiaomi TVs running on Android TV have their own characteristics of receiving a signal that may differ from the usual interfaces of older models. If your Xiaomi Mi TV or Redmi TV stopped seeing on-air broadcasting, the problem most often lies in the wrong choice of signal source or software failure.
The first thing to do is to check the physical connection of the antenna cable to the RF In or Antenna connector on the back of the device. Many users mistakenly connect the cable to the satellite TV connector or use adapters that do not support the DVB-T2 standard. The DVB-T2 digital tuner is a mandatory standard for receiving broadcasting in Russia and the CIS, and if the TV does not activate it, the search will be ineffective. Next, we will discuss the main causes of failures and methods for their elimination.
Problems with antenna cable and connection connector
The most common, but common, reason for the lack of channels is damage to the coaxial cable or oxidation of the contacts in the connector. Even if the wire is intact, the copper vein could bend inside, which will lead to a loss of signal level. Try to gently move the cable at the entrance to the TV during automatic channel search, if the signal level numbers jump or fall to zero, then the contact is broken.
Also worth paying attention to the length of the cable. If you use too long a wire (more than 20 meters) without an amplifier, the signal may fade before hitting the tuner of the Xiaomi TV. In such cases, even a powerful external antenna will not save the situation. It is recommended to use double-shielded cables, especially if there are power lines nearby that cause interference.
- π Check the density of the plug entry into the Antenna In socket on the back panel.
- π Make sure the cable length does not exceed the permissible limits without using an amplifier.
- π Check the connector for oxides or mechanical damage to the contacts.
Remember that some Xiaomi TVs have connectors vertically or in hard-to-reach places. When connecting, make sure the cable doesnβt overflex under its own weight, as this can cause the vein to break internally over time.
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Use a contact cleaner spray to handle the antenna connector if the TV is in a wet room β this often restores contact.
Miscalculating signal source and region
One of the key features of the Android TV operating system on board Xiaomi TVs is that the tuner settings are strictly linked to the selected region. If you first set up a country that uses a different broadcast standard (for example, DVB-C instead of DVB-T2), the TV simply will not search for the desired frequencies. To fix this, you need to log into the settings menu and check the geographic location of the device.
The process of changing the region may require resetting the current channel settings or completely resetting the TV to factory settings. Go to Settings β System β About TV β Country. Here it is important to choose "Russia" or your actual country of residence. After the region change, the TV will ask for a reboot, and only after that, re-search the channels will be possible with the right parameters.
Often users forget to switch the antenna type to the search menu. The TV can only search for cable TV, ignoring the over-the-air signal. Make sure the search options are for the "Antenna" or "Etheric TV" source, not "Cable".
β οΈ Warning: Changing the region on some global firmware versions may temporarily block access to some pre-installed applications, but this is necessary for the tuner to work properly.
Weak signal strength and need for amplifier
Digital TV differs from analog TV in that it either works perfectly or doesn't work at all. If the signal level is below a certain threshold (usually around 50-60%), the Xiaomi TV will not be able to decode the data stream, and the channels will not appear. Unlike the old TV, where it was just a snow picture, here you will see a black screen or a message "No signal".
To check the signal level, use the built-in indicator. During manual channel search or in the engineering menu (if available), two scales are displayed: "Level" and "Quality." If the "Quality" scale is close to zero, even a high "Level" will not help. In this situation, you need to install an active antenna with a power booster.
If you are using an active antenna, make sure the power supply is connected to the outlet, not just the TV.Some Xiaomi models may not supply 5V power to the antenna cable, so an external unit is a must.
| Parameter | Normal value. | Critical significance | Action. |
|---|---|---|---|
| Signal level | > 70% | < 40% | Replace the antenna |
| Signal quality | > 60% | < 30% | Point the antenna. |
| BER (Mistakes) | 0 | > 10^-4 | Check the cable. |
The location of the antenna is also critical: Metal structures in the home, walls with rebars, and even a closed window can significantly weaken the signal. Try temporarily moving the TV or antenna closer to the window facing the TV tower to see if the image appears.
Failures in software and firmware
Software bugs in the Android TV operating system can block the operation of the tuner module. This often happens after a failed update or installation of third-party applications that conflict with system services. If the hardware is good but the channels are not configured, you probably need to update the firmware Xiaomi PatchWall or the full version of Android.
You can check for updates in the Settings menu. β On TV. β System update: If the automatic search does not find new versions, you can download the current firmware from the official website, write it down to the official website. USB-drive (in the root of the disk, file system) FAT32) Run the update manually through the recovery menu.