Laptop screen backlight ASUS Over time, it dims, begins to flicker, or fails completely, turning the device into a useless “brick.” If you notice that the image has become too dark, vertical stripes have appeared, or the screen does not turn on at all when the system is running, the problem is most likely LED backlighting of the matrix. The service center will charge from 3 to 10 thousand rubles for such work, but if you have the tools and patience, you can do it yourself.

In this article we will figure out how correctly replace the backlight on ASUS laptops - from budget VivoBook to gaming ROG Strix. You will learn what tools you will need, how to avoid common mistakes during disassembly, and what to do if after replacing the screen still does not work. And for those who have never repaired electronics, we have prepared a unique matrix and backlight compatibility table for popular ASUS modelsso as not to make a mistake with the choice of spare parts.

Signs of backlight malfunction: how to distinguish from matrix failure

Before you rush to disassemble your laptop, make sure that the problem is in the backlight, and not in the matrix or video card itself. Here are the key symptoms:

  • 🔦 The screen is barely visible in bright ambient light (there is an image, but it is very dim).
  • 💡 The backlight turns on only after opening/closing the lid multiple times or tapping on the body.
  • 🔥 Vertical stripes or “waves” appear on the screen when the angle of inclination changes.
  • 🌑 The screen is completely black, but the laptop boots (the system sound is heard, the indicators are on).

If you can see on the screen artifacts (multi-colored dots, distortion, dead pixels), the problem is most likely in the matrix or graphics chip. It's easy to check: illuminate the screen with a flashlight at an angle. If the image shows through, the backlight is to blame. If not, the problem is in the matrix or video card.

⚠️ Attention: On laptops ASUS TUF Gaming And ROG Zephyrus with refresh rates 144 Hz and above, the backlight may flicker due to a faulty display driver. Before disassembling, update the BIOS and video adapter drivers via MyASUS or official website.

What tools are needed to replace the backlight?

To work you will need:

  • 🔧 Screwdriver set: Phillips PH00 (for most screws), flat 1.5 mm (for latches), hexagon H1.5 (for some models ZenBook).
  • 🧲 Magnetic mat or organizer for screws (so as not to lose small parts).
  • 🔪 Plastic picks or guitar picks (to separate the case latches).
  • 💡 New LED backlight (select by matrix model, see table below).
  • 🔌 Multimeter (to check the voltage on the backlight connector).
  • 📸 Smartphone for photographing the process (useful for reassembly).

Some experts also recommend using thermal paste to fix the backlight, but this is optional - in most cases, the double-sided tape that comes with the new tape is sufficient. If you are working with a laptop under warranty, remember: DIY repairs will void the ASUS warranty..

📊 What tool do you already have?
  • Screwdrivers
  • Plastic picks
  • Multimeter
  • None of the above

Backlight compatibility table for popular ASUS models

Choosing the wrong backlight is the most common mistake when replacing. Below is a table with data for popular laptop series ASUS. If your model is not on the list, look for information on the matrix code (it is indicated on the sticker on the back of the screen).

Laptop model Matrix code Backlight type Number of LEDs (pcs.) Voltage (V)
ASUS VivoBook S14 (S433) B140HAN05.8 LED strip (bottom) 16 6.5–7.2
ASUS ROG Strix G15 (G512) N156HCE-GN1 LED strip (side) 24 12.0
ASUS ZenBook 13 (UX325) LPDDR3-133FHD Mini-LED (module) 32 5.0
ASUS TUF Dash F15 (FX516) B156HAN10.7 LED strip (top) 20 8.5

To accurately select the backlight, also consider screen size (For example, 15.6" or 17.3") and resolution (Full HD or 4K). Backlight for matrix 1920×1080 not suitable for screen 3840×2160, even if the physical dimensions are the same.

💡

Before purchasing a backlight, check its functionality using a multimeter. Connect the strip to a 12V power supply (for most models) - if the LEDs do not light up, the part is defective.

Step-by-step instructions: how to disassemble a laptop and get to the backlight

Disassembling a laptop is the most critical step. Errors here can lead to damage to the cables or housing. Follow the instructions:

  1. Turn off the power and remove the battery. On some models (for example, ASUS ROG) the battery is non-removable - in this case it is enough to disconnect the power cable from the motherboard.
  2. Remove the back cover. On most laptops it is secured with screws and latches. Start from the corner near the loop - there is usually a special recess for the pick.
  3. Disconnect the cables. Carefully pry up the black clips on the connectors (do not pull on the wires!). On models with discrete graphics (RTX 3060 and above) it may be necessary to remove the cooling system.
  4. Remove the matrix. It is attached to the cover with 4–6 screws under rubber plugs. After removing the screws, carefully separate the matrix from the case, starting from the bottom edge.

At the disassembly stage, many people encounter problems hidden screws. For example, in ASUS Zephyrus G14 one screw is hidden under the leg, and in VivoBook Flip - under the sticker with the serial number. Always check with official disassembly manuals for your model.

The power and battery are turned off|The location of the screws and cables is photographed|Tools are prepared (mediators, screwdrivers)|The new backlight is checked with a multimeter-->

Replacing LED backlighting: nuances for different types of matrices

The replacement technology depends on the type of backlight:

  • 🔹 LED strip (bottom/side). The most common option. The tape is attached with double-sided tape along the bottom or side edge of the matrix. To remove it, carefully pry the edge with a plastic card and pull it to the side (not up!).
  • 🔹 Mini-LED module.ZenBook Pro Duo, ROG Mothership). Here the backlight is integrated into the matrix - it cannot be replaced separately, only together with the screen.
  • 🔹 CCFL lamp (old models). In laptops produced before 2015 (for example, ASUS K55V) fluorescent lamps were used. Replacing them requires a soldering iron and high-voltage skills.

When installing a new tape, be careful polarity: red wire - positive (+), black - minus (–). If you mix it up, the backlight will not work. Also make sure that the tape is glued evenly - unevenness will lead to uneven lighting (“clouding” effect).

⚠️ Attention: On laptops with touch screens (ASUS 2-in-1) the backlight is often connected to the display glass. When disassembling, do not press on the glass - it may crack. Use suction cups for even lifting.
What to do if the new backlight does not work?

1. Check the polarity of the connection (swap + and –).

2. Make sure that the backlight cable is tightly inserted into the connector on the motherboard.

3. Measure the voltage at the connector with a multimeter - it should correspond to the passport data (see table above).

4. If the backlight blinks, the problem may be in the matrix driver (the chip on the board needs to be replaced).

Laptop assembly and testing: how to avoid mistakes

After replacing the backlight, reassemble the laptop in the reverse order, following the photos taken earlier. Pay special attention to:

  • 🔌 To the trains. They should lie flat, without kinks. On models with NVIDIA Optimus (For example, ASUS TUF A15) the video card cable often frays - check it for integrity.
  • 🔧 Vintam. Tighten them crosswise to avoid skewing the housing. Do not overtighten as this may damage the threads.
  • 💻 Screen hinges. After assembly, open/close the lid several times to ensure that the hinges do not jam.

To test, turn on the laptop and check:

  1. Uniformity of illumination (are there any dark spots or overexposure at the edges).
  2. Reaction to brightness changes (keys Fn + F5/F6).
  3. No artifacts when scrolling pages or playing games.

If after assembly the screen does not turn on, but the laptop works (you can hear the boot sound), check:

  • 🔹 Connecting the matrix cable to the motherboard.
  • 🔹 BIOS settings (sometimes after disassembly the priority of the video card is reset).
  • 🔹 Integrity of the new backlight (possibly defective or damaged during installation).
💡

If vertical stripes appear after replacing the backlight, the matrix cable is most likely damaged. In this case, it will need to be replaced or repaired with a soldering iron.

Common mistakes and how to avoid them

Even experienced craftsmen sometimes make mistakes when replacing the backlight. Here are the most common:

Error Consequences How to avoid
Using metal tools to release latches Scratches on the case, damage to the cables Use plastic picks or special paddles
Using excessive force when removing the die Cracks in glass (especially on touch screens) Use suction cups and lift the screen evenly
Incorrect polarity when connecting the backlight The backlight does not work or burns out Check the markings (+/-) on the tape and connector
Ignoring multimeter testing Installing a faulty backlight Always test new tape before installation

Another typical problem is Damage to the touchpad cable when disassembling. To avoid this, unplug it first, and when assembling it, place it so that it does not bend near the screen hinge. On models ASUS ROG The touchpad cable often goes on top of the keyboard cable - be careful!

FAQ: answers to frequently asked questions

Is it possible to replace the backlight on an ASUS laptop without disassembling the screen?

No, replacing the backlight always requires complete disassembly of the matrix. Some service centers offer “seamless” repairs, but this is a marketing ploy - in fact, the screen is still removed, just more carefully.

How much does it cost to replace the backlight at an ASUS service center?

The cost depends on the model:

  • Budget laptops (VivoBook, X515): 3,000–5,000 rubles.
  • Gaming (ROG Strix, TUF): 6,000–10,000 rubles.
  • Premium (ZenBook Pro, ROG Zephyrus): 10,000–15,000 rubles.

The price usually includes diagnostics and a labor warranty (1-3 months).

How to check if the new backlight is working before installation?

Connect the LED strip to a 12V (for most models) or 5V (for Mini-LED). All diodes should light up evenly, without flickering. If the tape does not light, check the polarity or replace the power supply.

What should I do if after replacing the backlight the screen began to flicker?

Causes of flickering:

  • Poor contact in the backlight connector (reconnect the cable).
  • Incompatible strip (check voltage and number of LEDs).
  • Problems with the matrix driver (the chip on the board needs to be replaced).

Start by checking your contacts. If this does not help, contact service.

Can I use the backlight from another laptop?

Theoretically yes, but only if they match:

  • Matrix size (e.g. 15.6").
  • Backlight type (LED strip or module).
  • Voltage and number of diodes.
  • Connection connector.

For example, backlight from Lenovo Legion may be suitable for ASUS TUF, if the matrices are identical. But it is better to use original spare parts.