Disassembly of the remote control Xiaomi Mi TV 4S: instructions with photos and nuances

Why do you need to take apart the Xiaomi TV 4S remote?

The remote control from the Xiaomi Mi TV 4S is a compact but important device that can eventually fail. Most often, users experience button sticking, oxidation of the contacts of the battery compartment or a complete failure of the device after a fall. Most of the time, the problem is solved by simply cleaning or replacing the elements, but for this the remote must be properly disassembled.

Unlike other brands, Xiaomi's model has a specific design: the case is fastened not only by latches, but also by hidden clips, and the board with buttons is often glued to the front panel. Incorrect disassembly can damage flexible plumes or break plastic fixtures, which will help avoid errors and get the job done carefully, even if you have never done electronics repair before.

Before you start, make sure that the problem is really in the remote, not the TV. Try to control the Mi TV 4S using the Mi Remote app on your smartphone. If the commands are executed, the remote is to blame. If not, the IR receiver in the TV itself may be faulty.

Tool preparation: what will be needed to analyze

To accurately open the case of the remote Xiaomi Mi TV 4S does not need professional tools, but without some devices will be difficult.

• 🔧 Plastic blade or mediator to disengage the latches of the shell. Metal screwdrivers can leave scratches.
• 📸 Smartphone with camera - to photograph the location of parts before disassembly (useful when reassembling).
• 🧴 Isopropyl alcohol (70% and higher) - for cleaning contacts and boards from oxidation.
• 🧻 Cotton swabs and napkins without pile - for wiping internal surfaces.
• 🔋 New type batteries AAA — If the cause of malfunction in discharged batteries.
• 🧲 Magnetic screwdriver (cross, size) PH0) — for spinning screws (if they are in your remote modification).

Important: Don't use knives or sharp objects to open the case! Xiaomi's plastic remote is quite fragile, and even a small effort can lead to cracks. If you don't have a plastic blade at hand, you can replace it with an old bank card.

Step-by-step: how to disassemble the remote Xiaomi TV 4S

The process of disassembling the remote consists of several steps. Follow the instructions carefully so that internal components are not damaged.

1. Remove the batteries. Turn the remote over and move the battery lid in the direction indicated by the arrow. Carefully get the batteries out. If the lid fails, don't force it, it may be locked with an extra latch.
2. Find the case connector points. Check the remote for visible seams. Usually the latches are located on the sides and at the bottom (on the battery side). In the Mi TV 4S, there is often a hidden clip under the Xiaomi logo, which should be opened last.
3. Separate the halves of the body. Put a plastic blade in the seam between the front and rear panels from the battery compartment. Carefully drive the tool along the edge, alternately snapping the locks. When you move correctly, you will hear light clicks. What to do if the body does not detach? If the latches do not respond, try to heat the remote with a hairdryer (temperature not higher than 50 ° C. The plastic will become more elastic and the clips will open easier. Don't overheat - this can deform the case!
4. Disconnect the board with the buttons. When you take off the back cover, you'll see a circuit board glued to the front panel. Don't pull it by force! Carefully shovel the board with a blade from the edge where the battery contacts are located. If the board is glued, use a thin thread or toothpick to separate it from the case.

Critical detail: Xiaomi Mi TV 4S remotes often use a flexible plume connecting the board to the IR emitter. If you pull the board sharply, the plume can come off! Before you take it off, make sure that no wires are holding it.

Cleaning and repair of internal components

After the remote is disassembled, you need to assess the condition of the internal parts, most often the problems are caused by:

• 🔋 Oxidation of the contacts of the battery compartment - leads to unstable operation or complete failure.
• 🖱️ Button pollution - dust and fat from your fingers accumulate under the rubber keys, causing them to stick. Rinse the rubber panel with soap solution and dry.
• 📶 IR radiation damage – if the remote does not send a signal, check the integrity of the small black diode on the board: IR-38KHz).

For deep cleaning, use an ultrasound bath (if available) or a soft toothbrush with isopropyl alcohol. Do not use acetone or solvents - they can damage plastic parts!

⚠️ Warning: If the board is found to have traces of corrosion (green plaque), it is a sign of moisture, in which case you can not do with a conventional cleaning - you will need to replace damaged tracks or the entire board.

Common mistakes in the analysis and how to avoid them

Even experienced users sometimes make mistakes that lead to the final breakdown of the remote, and here are the most common ones:

1. Use metal tools. Screwdrivers or knives scratch plastic and can close contacts on the board. Always use plastic or wooden shoulder blades.
2. Applying excessive force to the latches. If the body does not detach, do not push harder, look for hidden clips. Xiaomi Mi TV 4S remotes often have an additional lock under the brand logo.
3. The flexible plume is broken. Many users don't notice the thin wire connecting the board to the IR emitter and accidentally break it. Always check for the plumes before you remove the board!
4. Loss of small parts. When disassembling, small springs or gaskets may fall out of the case, work on a light surface (for example, a sheet of paper) so that you do not lose them.

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If the remote is not working after assembly, check the polarity of the batteries. In some versions of the Mi TV 4S, the contacts are located outside the standard, and improper installation of the batteries can block the current.

Assembly of the remote after repair: step-by-step algorithm

Reverse assembly of the Xiaomi Mi TV 4S requires no less accuracy than parsing.

1. Set the board in place. Make sure that the flexible plume (if any) is not twisted and properly connected to the connector. The board should lie flat, without distortion.
2. Hold the rubber panel with the buttons. Match all the keys with the holes in the case. If the panel is removable, make sure it is not turned over (buttons should be pressed easily, without jamming).
3. Connect the halves of the body. Start at the top (on the IR side), then gently snap the side clips. The bottom one is fixed, and it should be in place with a slight click.
4. Set the batteries and check the operation. Put the batteries in polarity, and test all the buttons. If some keys don't work, take the remote again and check if the rubber panel is properly assembled.

⚠️ Warning: If the buttons become tight or creak after assembly, the rubber panel is not installed correctly. Do not continue to use the remote in this condition, this will lead to rapid wear of the contacts!

Alternative ways to control the TV without a remote

If the Xiaomi Mi TV 4S remote has not been repaired or you have been temporarily without it, there are several ways to control your TV:

• 📱 Download it to your smartphone (available for Android and iOS) and connect to your TV via Wi-Fi or Bluetooth.The app supports all the features of the original remote, including voice search.
• 🖱️ USB-A mouse or a keyboard. Connect them to the port. USB This will allow navigation on the menu, but it won't replace the on/off buttons.
• 🔌 Power button on the body. On the back of the Mi. TV 4S You have a physical power button. Hold it for 5 seconds to restart the TV.
• 🎮 Gamepad. If you have a Xiaomi Game Controller or other compatible joystick, it can be connected via Bluetooth and used to control it.

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The Mi Remote app requires that the TV and smartphone be connected to the same Wi-Fi network. If the TV is not connected to the Internet, use Bluetooth mode (not available on all remote models).

FAQ: Frequent questions about the Xiaomi TV 4S remote