Xiaomi’s broken TV screen is one of the most unpleasant breakdowns that can happen to a device. Unlike smartphones, where replacing the display has become almost routine, repairing the TVs requires more care and preparation. However, with the tools and patience to replace the screen Xiaomi TV You can save money on your own at the service center.
In this article, we will discuss the entire process in detail: from diagnosing a malfunction and selecting a new matrix to disassembling the case, connecting plumes and final settings. TV 4S/4A/4X Redmi Smart TV, You will also learn how to avoid common errors that lead to damage to the board or malfunctioning of the screen after replacement.
Before you start, evaluate your strength: repairs require precision, patience and basic electronics skills. If you've never mastered the technique, you might want to call a professional. But if you're willing to try, go ahead!
1. Diagnosis: Is the screen exactly the problem?
Before ordering a new screen, make sure that the breakdown is not related to other components.
- 🔹 No image when the backlight is running (the screen is lit, but nothing is visible).
If the TV doesn't turn on at all, the problem might be the power supply, the motherboard, or the cables, in which case the screen replacement won't help, to rule out other malfunctions:
- Connect an external signal source (e.g, HDMI-Player – if there is sound and no image, the problem is in the screen or video processor.
⚠️ Note: If the Xiaomi TV fell from a height or was hit, not only the screen could be damaged, but also plumes, connectors or board.
2. Selection of a new screen: original vs. analog
The right array depends on the quality of the image and the life of the TV after repair.
The original screens from Xiaomi guarantee full compatibility, but they are expensive (from 15 000 to 40 000 rubles depending on the diagonal).
- 🛒 In official service centers (parts are rarely sold, but you can agree on the terms of the contract).
- 🛒 On AliExpress from trusted sellers (search with the mark Original) OEM).
- 🛒 In specialized parts stores for Xiaomi (for example, Mi-Shop).
Analogues (copies) are cheaper (from 8000 rubles), but there are risks:
- ⚠️ Low quality color reproduction (can cast blue or green).
- ⚠️ Poor viewing angles (image "fading" when viewed from the side).
- ⚠️ Rapid wear of backlights (after 1-2 years, dark spots may appear).
| Parameter | Original screen | Analogue (copy) |
|---|---|---|
| Price (32-55) | 15 000–40 000 ₽ | 8 000–25 000 ₽ |
| Compatibility | 100% (plug & play) | You may need to adjust. |
| Guarantee | 6–12 months | 3-6 months (or absent) |
| Image quality | Identical to the original | It may be different (colors, contrast) |
When buying, pay attention to:
- 📏 Precise TV model (e.g. Xiaomi Mi) TV 4S The screens for even one diagonal may differ in connectors!
- 🔧 Type of matrix: IPS, VA or OLED (for Mi TV Q1/Q2).
- 🔌 Number and type of connectors (usually) 1–2 plume LVDS/eDP + light-jack).
💡
Before you buy, ask the seller to send you a photo of the screen connectors and compare it to your model. Even on the same TV series, they can be different!
3. Screen replacement tools
To disassemble and replace the matrix, you will need:
Screwdriver cross (PH2) flat (3-4 mm)
Plastic blades or mediators for disengaging the body
Screen suction cup (diameter 5-7 cm)
Tweezers with curved ends
Multimeter (to check the light chains)
Thermopaste (if you need a replacement radiator)
Antistatic bracelet (optional but recommended)
Scotch or tape for fixing plumes-->
Also prepare:
- 📸 Camera or phone – take pictures of each step of disassembly so as not to confuse the plumes when assembling.
- 🧹 Soft fabric and wipes – to clean the screen and case of dust.
- 🔌 Power supply with limited current (if you test the screen before full assembly).
Where to buy tools? Electronics repair kits are sold on AliExpress, in Chip and Deep or 220 Volt stores, costing a full set from 1,000 to 3,000 rubles.
⚠️ Warning: Don't use metal screwdrivers to disconnect the plastic latches of the case - they break! Only plastic shoulder blades.
Step-by-step instructions: how to disassemble the TV and replace the screen
The screen replacement process can be divided into 5 key steps, followed in strict order to avoid damaging components.
Step 1: Disconnection and preparation
1. Turn off the TV from the outlet and wait 10-15 minutes - this will discharge the capacitors in the power supply.
2. Place the TV screen down on a soft surface (e.g., a blanket or foam).
3. Remove the stand (if any) - it is usually fastened with 4 screws.
Step 2: Removal of the back cover
1. Unscrew all screws around the perimeter of the lid (there can be from 10 to 20 pieces).
2. Carefully apply the lid with a plastic spatula starting at the corner. The latches are fragile - don't make any effort!
3. Put the lid aside. Now you see the motherboard, the power supply, and the backlit screen.
What to do if the lid is not removed?
Step 3: Unlocking the plumes and backlights
1. Find the matrix plumes (usually 1-2 tapes connected to the motherboard) and carefully disconnect them by pulling the plastic lock (not by the wires!).
2. Turn off the backlight connectors (white wires going from the inverter to the screen). They can be glued — don't tear!
3. If the screen is mounted on metal clips, unscrew them (usually 4-6 screws at the edges).
Step 4: Install a new screen
1. Place the new screen in place of the old one, combining the mounting holes.
2. Reconnect the plumes in reverse order. Make sure they're up before you click!
3. Connect the light connectors. If the wires are too short, use the tape to fix.
Step 5: Verification and Assembly
1 Connect the TV to the socket and turn it on. If you have an image, you can assemble the case.
2. Make sure that all plumes lie flat and are not clamped over by the lid.
3. Twirl the screws of the lid cross-to-cross to avoid distortions.
The density of the plumes (reconnect them).
Integrity of contacts on the motherboard (may be oxidation).
- Correctness of connection of backlight (the confused connectors lead to flickering).-->
5. Frequent mistakes and how to avoid them
Even the skilled craftsmen sometimes make mistakes when changing the screen. TOP-5 problems and solutions:
1.The screen does not turn on after replacement
- 🔌 Check the power backlight - the inverter connector may have moved away.
- 🔧 Make sure that the matrix plumes are fully inserted (clicking should be heard).
- 🔋 Check the power supply multimeter (voltage at the output should be) ~12–24V).
2. Image is there, but with artifacts
- 🎨 If the colors are distorted, it may be an incompatible matrix (check the model).
- 🔄 If the strips flicker - reconnect the plumes or clean the contacts with alcohol.
- 💡 If the lighting is uneven, check it out. LED-ribbon.
3.The TV turns on but turns off after 5 seconds
It's a short circuit defense mechanism.
- ⚡ Damaged plume of illumination (check for cliffs).
- ⚡ Short circuit in the matrix (if the screen is defective).
- ⚡ Incorrect connection of connectors (muttled) + and - in the backlight).
4.No sound after screen replacement
The sound is not matrix dependent, so the problem is most likely:
- 🔊 Disconnected speakers (check the plumes to the audio board).
- 🔊 Reset settings (go to Settings) → Sound and tune it back).
5.The screen is working, but touch buttons are not responding
On some Xiaomi models (e.g. Mi) TV 4A) The touchpad is connected by a separate plume:
- 📱 Connecting the sensor plume to the motherboard.
- 📱 Integrity of contacts (sometimes oxidized).
⚠️ Warning: If the screen heats up more than usual after replacement, this may indicate improper lighting or damage. LED-Turn off the TV immediately and check the chains!
Calibration and adjustment after replacement
Even if the new screen is working, you have to calibrate it to show it correctly.
1. Resetting settings to factory
Go to Settings. → The device → Resetting. This will eliminate any conflicts with previous image settings.
2. Color profile setting
Settings menu → Display and sound → Pick the picture:
- 🎨 Image mode: Standard (for most matrices).
- 🎨 Color temperature: Warm or Neutral (depending on the matrix).
- 🎨 Brightness/Contrast: Set to 50-70% and adjust to your preferences.
3. Checking the uniformity of the illumination
Enable test mode (on some models it is activated by the Menu button) + Volume Down when you turn on:
- ☑️ Absence of dark spots (especially in the corners).
- ☑️ Uniformity of white (no yellowness or blue hue).
- ☑️ No flickering when changing brightness.
4. Firmware update
Sometimes, after the screen is replaced, the TV is unstable.
- Go to Settings → About TV → System Update.
- If the update via the Internet does not help, download the firmware from the official Xiaomi website and install it through the USB.
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If you have vertical stripes after you change the screen, try to press the matrix plumes slightly while the TV is running, and if the stripes disappear, the problem is poor contact, and the plume needs to be reconnected.
7. Cost of repair: cheaper on your own or in the service?
The price of a screen replacement depends on the TV model, the type of matrix and the region.
| Parameter | Self-repair | Service centre |
|---|---|---|
| Screen (32-55) | 8 000–30 000 ₽ | 15 000–50 000 ₽ (mark-up) |
| Tools | 1 000–3 000 ₽ (once) | — |
| Work. | 0 ₽ | 5 000–15 000 ₽ |
| Guarantee | Screen only (if you bought with a guarantee) | 6-12 months to work and spare parts |
| Duration of repairs | 3-6 hours | 1-5 days |
When should I contact the service?
- 🔧 If you have a Xiaomi Mi TV Q1/Q2 (OLED) — These models require special calibration equipment.
- 🔧 If after the replacement there are problems with the motherboard (TV does not turn on, the indicator flashes).
- 🔧 If you are not sure about your skills, mistakes in disassembly can lead to complete breakdown.
When can I do it myself?
- 🛠️ If you have a Xiaomi Mi TV 4S/4A or Redmi Smart TV — These models are easier to repair.
- 🛠️ If you have already had experience disassembling equipment (smartphones, laptops).
- 🛠️ If you are willing to take risks and learn from mistakes.