How to check the remote Xiaomi: full diagnosis of malfunctions

Owners of smart TVs and consoles from the Chinese giant often face a situation when the device ceases to respond to commands. Before looking for a replacement or calling a wizard, you need to conduct a thorough diagnosis, since the problem can lie in the banal discharge of batteries or software failure of the Android TV system. Modern Xiaomi remotes are divided into two main types: classic infrared and advanced Bluetooth models with voice control, and methods of checking them vary significantly.

The malfunction of the control device can manifest itself in various ways, from a complete lack of response to a selective failure of certain keys or delays in signal transmission. It is important to understand that an infrared port requires line of sight, whereas a Bluetooth connection works in either direction but requires pairing. In this article, we will discuss all the available ways to identify the source of the problem and restore the accessory to work without unnecessary costs.

Note that software slams on your TV operating system often mimic a remote breakage. If your Mi Remote suddenly stops working, don't jump to conclusions about a physical malfunction. The first step should always be a comprehensive check, including visual inspection, testing power supplies and software diagnostics through special applications.

Visual inspection and check of the elements of power

Any diagnostics starts with the exception of the simplest causes: first of all, you need to remove the batteries and carefully examine the contacts inside the compartment; oxidation or contamination of contacts is a common cause of signal loss, especially if the device has not been used for a long time; wipe the contacts with a dry cloth or cotton swab dipped in alcohol to ensure a reliable connection.

Then check the batteries themselves. Even if the batteries are new, they may be defective or expired. Use a multimeter to measure the voltage or simply insert them into another device to make sure they work. Xiaomi remotes usually require two 1.5V AAA batteries each.

⚠️ Warning: Never leave dead batteries inside the remote for long periods of time.The electrolyte can leak out and damage the internal board, causing the device to break permanently.

Notice the case, cracks, signs of falling or getting liquid may indicate damage to the internal components, if the case is deformed, the plume may be in contact with the circuit board, or the quartz generator may be damaged, and in such cases, simply replacing the batteries will not be enough.

💡

Use only alkaline batteries from well-known brands. Salt cells discharge faster and can oxidize the contacts of the Xiaomi remote.

Diagnostics of IR port using a smartphone camera

The most effective way to test the performance of an infrared emitter is to use a digital camera, which is that the matrix of modern smartphones can detect infrared radiation that is not visible to the human eye, and this method can accurately determine whether the remote control is signaling when you press buttons.

To do this test, turn on the camera on your phone and point the front of the remote control, where the emitter is located, press any button on the remote control and watch the screen of your smartphone. If you see a flashing purple or white glow on your phone screen, the infrared diode is working and transmitting a signal.

If there's no glow, try replacing the batteries with a well-known one and repeat the procedure. It's also worth checking if the IR port is closed with contaminants. Sometimes it helps to tap the remote control lightly to restore contact inside. The absence of glow after all the checks indicates that the diode is burned out or the chain breaks.

If you can’t see anything on your phone screen, try using another device’s camera or your computer’s webcam, where such filters may not be available.

Verification of Bluetooth connection and pairing

Owners of newer Xiaomi Mi TVs and Mi Box S consoles use Bluetooth-enabled remotes, which require no line of sight and allow them to control TV via voice commands, and if the remote stops working, the problem is often the loss of pairing.

To re-pair, you need to bring the remote as close as possible to the TV (at a distance of 10-15 cm). At the same time, press and hold two buttons: usually a combination of Home (house) and Menu (three stripes), or Back (back) and OK. On the TV screen, a message should appear about a successful connection.

• 🔋 Make sure that the remote has fresh batteries installed, as the Bluetooth module consumes more power than the IR transmitter.
• 📡 Check if the TV is on flight mode or if Bluetooth is turned off in the system settings.
• 🔄 Try restarting the TV by completely disconnecting it from the network. 1-2 minute.

Sometimes a lot of gadgets accumulate in the list of paired devices, which causes conflicts. Go to the Bluetooth settings on the TV through the Settings menu → Remotes and accessories and remove the old device from the list, then do the pairing again. This often solves the problem of "hanging" the connection.

Using testing applications

If the remote is not working and navigation on the TV menu is impossible, you can use the smartphone as a temporary substitute. the official Mi Remote application or third-party utilities like ZaZa Remote allow you to fully control the TV if the smartphone has an infrared port or it is connected to the same Wi-Fi network.

For Android-based TVs TV It's possible to install diagnostic applications directly onto the device. USB-You can download the Remote Control Tester app from the Google Play Store, which displays all buttons you click on the screen, which helps you identify the dead zones of the remote keyboard.

It is also worth mentioning the possibility of using ADB-So if you connect to a TV over the network, you can send a button-press-emulation command, for example, a command to emulate the home button is like this:

adb shell input keyevent 3

This method allows you to test whether the TV system itself responds to commands, excluding the physical breakdown of the remote from the equation. If the command from the computer passes and the remote does not, the problem is definitely in the hardware part of the remote.

Resetting and reflashing the remote

In rare cases, the remote may need a software reset. For some Xiaomi models, there is a hidden Hard Reset procedure. It is performed by removing the batteries, clamping all the buttons for 10-15 seconds and then installing the batteries back while holding a certain key combination.

If the remote is working but with errors (e.g. voice input is not working), try updating its software. This usually happens automatically when you update your TV system. Go to Settings → About TV → System Update and check for new versions of the software.

It's worth noting that flashing the remote itself apart from the TV is not possible for the average user, because the microcontrollers are closed, and all updates come as part of MIUI for TV firmware.

⚠️ Warning: Do not attempt to open the remote control yourself if it is under warranty. Infringement of seals and autopsy marks will be grounds for refusing free service.

When Replacement or Repair Is Needed

If all of the above methods didn't work, and the remote doesn't emit an IR signal even with the new batteries, it's likely that the internal components failed, which could be a burnt-out transistor, a plume break, or a quartz resonator damage.

In the case of IR remotes, repairs are often not cost-effective, as the cost of a new original or compatible counterpart is low, but for expensive Bluetooth models with a gyroscope and voice control, it makes sense to contact an authorized Xiaomi service center.

When buying a new remote, look for your TV model. The remotes from different series may have different IR frequencies or incompatible Bluetooth protocols. It is best to look for accessories by the exact TV model number listed on the sticker on the back of the case.

💡

If the IR port is functional (visible through the camera), but the TV does not respond, the problem is in the receiving module of the TV itself, not in the remote.

Frequently Asked Questions (FAQ)