The curtain on Xiaomi TVs and projectors is not just a decorative element, but an important functional detail that protects the screen from dust, mechanical damage and even regulates light transmission in some models. stop moving smoothly, jam or just lose your aesthetic appearance. TV Mi Projector works with interruptions, do not rush to carry equipment to the service center - you can replace it yourself.
In this article, we will discuss the whole process from A to Z: how to find the right curtain (original or analog), what tools will be needed for disassembly, how to avoid typical installation errors and what to do if problems arise after replacement. TV 4S, Mi TV Q1 And the Mi Smart Projector series, because they have key differences in design, and you'll also find a comparison table of original and alternative curtains with prices and specifications.
Before you start, consider that replacing the curtain on some models requires care, as it is quite easy to damage the plume tape or lift mechanism. If you have never understood Xiaomi’s technique, practice on less critical details or watch video instructions for your model – links to them are at the end of the article.
Why the curtain fails and when it needs to be changed
The curtain in Xiaomi devices breaks for a reason, usually due to natural wear and tear or external factors.
- 🔄 Mechanical wear: Over time, plastic gears and guides wear off, causing the curtain to skip or move in jerks, especially for televisions that often turn on/off.
- 💥 Hit or fall: Even a minor mechanical impact can bend the guides or knock down the mounts, for example, if the TV was standing on an unstable stand.
- 🔥 Overheating: Xiaomi projectors have a curtain next to the cooling system. If the fans are clogged with dust, the heat deforms the plastic.
- ⚡ Electrical failures: in electric-powered models (e.g. Mi) TV The Master may burn the motor or the controller, in which case the curtain either does not respond to commands or moves randomly.
How do you know if it's time to change the curtain instead of repair it?
- 🚫 The curtain does not open/close at all, even after resetting the TV settings.
- 🔊 When moving, a grinding or crackling is heard - this is a signal of the destruction of the gears.
- 📏 The curtain does not close completely, leaving a gap (often due to bent guides).
- 🔌 In models with electric drive, the curtain “twitches” or stops halfway.
⚠️ Warning: If the curtain is jammed in the closed position and the TV is not turning on, do not try to open it by force! in some Xiaomi models (for example, Mi). TV 5 Pro) the curtain position sensor blocks the device from starting. First, turn off the power, then carefully check the mechanism.
If the problem is only slow motion or a slight backlash, try cleaning and lubricating the mechanism first. WD-40 But if the curtain is physically damaged, only a replacement.
Choosing curtains: original vs analogues
Before buying a new curtain, you need to precisely define the model of your device. Xiaomi has several types of curtains that are not interchangeable:
- 📺 For televisions: mechanical (manual) and electric (motor). TV 4S 55" uses a mechanical curtain, and in Mi TV Master 65 - Electrical.
- 🎥 For projectors: usually mechanical, but with an additional light-protective layer (for example, in Mi Smart Projector 2).
Where to look for original parts:
- 🛒 Xiaomi official store (mi.com) – compatibility guarantee, but high price and long delivery.
- 🌍 AliExpress — there are originals and quality analogues. Look for sellers with a rating above 98% and reviews in the photo.
- 🔧 Service centers – sometimes sell used parts after repair (cheaper, but the risk of wear and tear).
Alternative curtains are usually cheaper by 2-3 times, but there are nuances:
- ✅ Pros: low price, often improved design (e.g. matte coating instead of glossy coating).
- ❌ Cons: may not match the mounts, worse to protect from light, wear out faster.
| Model of the device | Type of curtain. | Original (price, ₽) | Analogue (price, ₽) | Notes |
|---|---|---|---|---|
| Mi TV 4S 55" | Mechanical | 2 500–3 000 | 800–1 200 | Analogues are often thinner, worse at blocking light |
| Mi TV Q1 75" | Electrical | 4 500–5 000 | 1 500–2 000 | In analogues may not have a position sensor |
| Mi Smart Projector 2 | Mechanical with filter | 3 200–3 800 | 1 000–1 500 | Filters in analogues are less effective |
| Mi TV Master 65" | Electrical premium | 6 000–7 000 | 2 500–3 500 | Analogs may not support smooth opening |
How to check the compatibility of the analogue:
- Compare the dimensions (length) × width × thickness) - allowable deviation ±2 mm.
- Look at the type of fastening: in the original it is usually latches or screws, in analogues there may be self-adhesive strips.
- For electric curtains, check the motor voltage (indicated on the old curtain sticker).
⚠️ Note: In Xiaomi projectors, the curtain is often integrated with a light filter. If you buy a non-filtered counterpart, the brightness and contrast of the image will deteriorate by 15-20%.
💡
Before buying a curtain on AliExpress, write a message with a photo of your model to see if the part will work. Many Chinese sellers give a guarantee of compatibility and can choose an option for your device.
Preparing for replacement: security tools and measures
To replace the curtain on Xiaomi, you will need:
- ⚒️ Tools: Plastic blades (for disassembly without scratches) Cross screwdriver (usually) PH0 or PH1). Tweezers (for extraction of small parts) Silicone lubricant (if you plan to clean the mechanism).
- 📦 Consumers: New curtain (original or analogue); double-sided tape (if self-adhesive); alcohol wipes (to clean contacts).
Security measures:
- ⚡ Turn off the TV/projector power and remove the plug from the socket.In some models, capacitors can hold a charge for up to 10 minutes!
- 🧤 Work in gloves – this will protect the screen from greasy traces and static electricity.
- 📸 Take photos of each step of disassembly, especially the location of plumes and wires.
Features of disassembling different models:
- 📺 Mi TV 4S/4A: The back cover is held on the latches, the screws are hidden under the legs.
- 🎥 Mi Smart Projector: First remove the top cover, then disconnect the lens unit.
- 🖥️ Mi TV Master: the curtain is attached to the screen frame, you will have to remove the front panel.
I cut the power and took the plug out of the socket.|
Prepared the workplace (soft surface, good lighting)|
I photographed the initial state of the curtain and fasteners|
Checked compatibility of the new curtain with the model of the device|
Prepared tools (scapula, screwdrivers, tweezers)-->
If you're replacing the curtain for the first time, watch the video disassembly for your model. TV Q1 There's a caveat: before you take off the curtain, you have to disconnect the position sensor plume, otherwise you can break the contacts.
Step-by-step instructions for replacing the curtain
Consider the universal replacement algorithm on the example of Xiaomi Mi TV 4S For other models, the steps may be slightly different – focus on your device’s photo.
Step 1: Removing the back cover
1. Place the TV screen down on a soft surface (e.g., a towel).
2 Unscrew all the screws on the back. TV 4S They are usually 8-10 pieces (including those hidden under the legs).
3. Carefully apply the lid with a plastic blade starting at the corner. The latches are fragile - don't put too much effort into it!
Step 2: Unlock the curtain
1. Find the curtain mechanism – it is located at the top of the TV (under the lid).
2 If the curtain is electric, disconnect the power plume and the position sensor. In mechanical models, just remove the locks.
3. unscrew the screws holding the guide curtains (usually 2-4 pieces).
Step 3: Installation of a new curtain
1. Check if the new curtain attachments match the old ones, fit them if necessary (for example, glue double-sided tape).
2. Set the guides and lock them with screws. Don't pull them over, the plastic can crack!
3. Connect the plumes (for electric curtains) or check the movement (for manual).
Step 4: Assembly and testing
1.Make sure the curtain moves smoothly, without hooks.
2. Connect the TV to power and check the curtain through the remote (Menu button) → Screen settings → Curtain).
3.If the curtain does not respond to commands, check the connection of the plumes or reset the TV settings.
What if the curtain works after replacement?
For Xiaomi projectors, the process is similar, but there is a nuance: after replacing the curtain, you may need to calibrate the light flux. → Display. → Calibrate the projector and follow the instructions on the screen.
Common Mistakes and How to Avoid Them
Even with a careful replacement, you can make mistakes that will lead to new problems.
- 🔌 Damage to the position sensor plume is a common mistake when replacing the curtain in the Mi TV The plume is thin and brittle, so unplug it with tweezers only, don't pull the wires!
- 🔧 Tug screws -- plastic curtain mounts break easily. Twisting screws to a light stop, without effort.
- 🧲 Using metal tools -- if you accidentally hit a screen or a matrix, you can damage them.
- 🔄 Polar mismatch: In the electric curtains, it's important to connect the plus and the minus correctly. If you mix it up, the motor will rotate backwards.
How to avoid problems:
- 📸 Take photos of each step – especially the location of plumes and wires.
- 🔍 Check the compatibility of the new curtain by article (written on the old part).
- 🧪 Test the mechanism before full assembly – it is easier to fix errors.
⚠️ Note: If after changing the curtain, the Xiaomi TV does not turn on or the indicator flashes, most likely you hit the power or motherboard plume.
Another common problem is that the curtain doesn't close completely, and this is usually related to:
- Incorrect installation of end sensors (they signal the motor when you need to stop).
- Then, check the sleeves with your guide.
- Too tight spring in the mechanical curtains - it needs to stretch a little.
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If the curtain is not working properly after replacement, check the mechanical mounts first and then the electrical connections. 80% of the time the problem lies in the wrong installation of the guides or skewed curtain.
Setting up the curtain after replacement
In most Xiaomi models, the curtain is controlled via the settings menu, but additional steps may be required after the replacement:
For electric-powered televisions
1. Turn on the TV and go to Settings → Display. → Curtain.
2. Select Calibration - the TV will automatically determine the extreme positions of the curtain.
3.If calibration doesn't help, reset the curtain settings to factory: Settings → System system → Resetting screen settings.
For mechanical curtains
1. Check the smoothness of the stroke - if the curtain moves tightly, lubricate the guides with silicone lubrication.
2 Adjust the spring tension (if available): ideally, the curtain should open/close from a light touch.
For Xiaomi projectors
1. After replacing the curtain, auto-set the image: Settings → Display. → Autocorrection.
2.If the brightness has changed, calibrate the color profile manually or reset the projector settings.
In models with voice control (for example, Mi). TV Master) after changing the curtain, you may need to retrain your voice commands, say, "OK, Google, retrain your TV commands," or use the Mi Home app.
If the curtain is controlled through the remote but does not respond to the buttons, check:
- Battery status in the remote.
- Settings of buttons in the menu Settings → Remote and accessories.
- Compatibility of the new curtain with the control protocol (in rare cases, analogues do not support an IR remote).
Frequent questions and decisions
The curtain moves in jerks after being replaced.
Can I repair the curtain instead of replacing it?
Where to buy the original curtain for Xiaomi Mi TV Q1?
How to remove the curtain on Xiaomi Mi Smart Projector 2?
The curtain doesn't close until the end.
Video Instructions and Useful Links
For clarity, we recommend watching video disassembly for your model:
- 📺 Xiaomi Mi TV 4S: curtain replacement).
- 🎥 Xiaomi Mi Smart Projector 2: Disassembling and cleaning the curtain.
- 🖥️ Xiaomi Mi TV Master: Replacement of the electric curtain.
Useful resources:
- 🛠️ Forum 4PDA — Xiaomi repair themes with photos and schemes.
- 📄 Official manuals (select your model).
- 🛒 AliExpress – search for curtains by model.
Important: When replacing the curtain with Xiaomi Mi TV s OLED-screen (e.g., Mi) TV Master OLED) Analogs can damage the matrix due to mismatching weight or materials.