Replacing the Wi-Fi module in an LG Smart TV: A complete guide from disassembly to setup

Wi-Fi module in the TV LG Smart TV The TV module is a small but critical device that controls the stability of streaming video, app functionality, and even firmware updates. If your TV suddenly stops connecting to the network, loses connection every five minutes, or doesn't detect available access points at all, the problem could be a faulty module. A service center will charge between 3,000 and 8,000 rubles for such a replacement, but with a little patience and skill, you can fix it yourself.

In this article, we will analyze the entire process from diagnostics to final configuration: how to determine that the Wi-Fi module is at fault (and not the router or firmware), where to buy original spare parts for models LG OLED C2, NanoCell 86 or UK6200How to carefully disassemble a TV without damaging the cables, and what to do if a module doesn't work after replacement. We'll also cover common mistakes that cause users to damage new modules during installation.

A word of warning: working with electronics requires caution. If you've never held a soldering iron or don't know what a TV motherboard looks like, it's best to leave the repair to the professionals. But if you're willing to take the risk, let's get started.

How to tell if your Wi-Fi module is faulty: 5 key symptoms

Before disassembling the TV, make sure the problem is truly with the module, and not with the router settings or a software glitch. Here are signs that are 90% likely to indicate a hardware problem:

• 🔌 The TV doesn't see it not a single one Wi-Fi network, although other devices (smartphone, laptop) connect without problems. The network indicator on the TV is lit or flashing, as if searching.
• 🔄 I connect to the network, but after 1-10 minutes the connection drops, and the TV displays "No internet connection." Restarting the router and TV doesn't help.
• 📶 There is a network signal, but the download speed does not exceed 1–2 Mbps (checked via Settings → Support → TV Information → Network Status). However, on other devices the speed is normal.
• 🔧 An error appears in the network menu Wi-Fi module not detected or Adapter initialization error.
• 🔥 After a thunderstorm, power surge, or physical damage to the case (impact, fall), Wi-Fi stopped working, but the rest of the TV functions are normal.

If any of these symptoms match, proceed to the next step: checking your software settings. Sometimes the problem can be resolved by resetting the network or updating the firmware.

⚠️ Attention: Before disassembling your TV, check if it's still under warranty. If your TV was purchased less than a year ago, contact a service center. LG — self-repair voids warranty obligations.

Pre-Replacement Diagnostics: Eliminating Software Failures

In 30% of cases, a Wi-Fi module failure turns out to be a firmware bug or incorrect settings. Follow this checklist to avoid wasting money on an unnecessary part:

1. Reboot your router (turn off the power for 30 seconds)

2. Reset the network settings on your TV (Settings → Network → Network Reset)

3. Update your TV firmware via USB or Ethernet

4. Test the TV on another Wi-Fi network (for example, from a phone in hotspot mode)

5. Disable VPN or proxy on your router (they may block the TV connection) -->

If Wi-Fi still isn't working after all these steps, proceed to hardware diagnostics. To do this:

1. Disconnect the TV from the power supply and remove the back cover (read how to do this in the next section).
2. Find the Wi-Fi module - usually a small 3x4 cm board with antenna wires (black and white cables). On models LG OLED It is located next to the HDMI ports, NanoCell - closer to the center of the motherboard.
3. Carefully inspect the module for:
   • 🔥 Blackened or swollen capacitors.
   • 💥 Cracks on the board or chipped elements.
   • 🌡️ Traces of overheating (yellow or brown spots).

Check that the antenna cables are securely seated in the connectors. Sometimes the problem lies in oxidized contacts.

If everything looks fine visually, but the module isn't working, it should still be replaced—the internal microcircuits could have failed without any external signs.

What should I do if there are traces of soldering on the module?

If you see soldering iron or solder marks on the module's board, this means the TV has already been repaired. In this case:

1. Check the quality of the soldering - the contacts may have fallen off.

2. Even if the soldering is fine, it's still best to replace the module—repairs will reduce its reliability.

3. Check with the previous owner (if the TV is used) to find out what exactly was repaired.

Choosing a New Wi-Fi Module: Original vs. Analogs

Wi-Fi modules for LG Smart TV are divided into three types:

1. Original — are produced LG or at their request (for example, Murata, AzureWave). They have branded markings, are 100% compatible, but are more expensive.
2. Universal analogues — modules from third-party manufacturers (for example, Intel, Broadcom), which match the connector and protocols. They're cheaper, but may require modifications (reflashing, soldering).
3. Used or refurbished — removed from other TVs. This is a risky option, as the module's lifespan may be running low.

To avoid making a mistake in your choice, use the compatibility table for popular models. LG:

TV model	Original module (article)	Suitable analogues	Approximate price, ₽
LG OLED C1/C2 (2021–2022)	6871QMH008A (Murata)	AzureWave AW-NM373, Intel 7265NGW	2 500–4 000
LG NanoCell 86/90 (2020–2023)	6871QMH007B	Broadcom BCM4356 (requires adapter)	2 000–3 500
LG UK6200/UK6300	6871QMH006A	AzureWave AW-NM365	1 500–2 800
LG QNED 80/85 (2021–2023)	6871QMH009C	Intel 8265NGW (with reflashing)	3 000–4 500

Where to buy:

• 🛒 Official dealers LG - guarantee of original part, but high price.
• 🌍 AliExpress, eBay — cheaper, but there's a risk of buying a fake. Look for sellers with a 98%+ rating.
• 🔧 Local service centers — sometimes they sell used modules after repair.
• 🏭 Spare parts from dismantling yards are an option for older models (for example, LG 43LH604V).

⚠️ Attention: TV modules LG 2018 and older (e.g. LJ550V, UK6300) are often incompatible with new firmware. If you're buying a used part, check the firmware version it was compatible with.

Preparing for Replacement: Tools and Safety Precautions

To replace the Wi-Fi module you will need:

• ⚒️ Screwdriver set: Phillips (PH0, PH1), flat (2–3 mm), hex (for some models) OLED).
• 🔧 Plastic spatulas — for carefully prying out the latches (metal tools can scratch the case).
• 🧲 Magnetic mat or tray - so as not to lose the screws.
• 📸 Smartphone — take photos of each step of disassembly, especially the location of the cables.
• 🔌 Antistatic wristband (optional, but recommended) - will protect the boards from static electricity.
• 🔥 Hair dryer or soldering station — if the module is soldered (relevant for models before 2019).

Before starting work:

1. Unplug the TV and wait for the capacitors to discharge (10-15 minutes).
2. Place the TV screen down on a soft surface (towel, foam).
3. Wear an antistatic wrist strap or periodically touch a grounded object (such as a radiator).
4. Prepare your work area - there should be enough light and space for the screws.

On TVs LG OLED series C1/C2/G2 The Wi-Fi module is secured with latches, not screws. If removed carelessly, the plastic clips can break—be extremely careful!

Step-by-step instructions for replacing the Wi-Fi module

The disassembly process varies depending on the model, but the general procedure is the same. Let's look at an example. LG OLED C1 (for other models we will indicate the key differences).

1. Removing the back cover

On TVs LG OLED The lid is secured with latches and 4–6 screws around the perimeter:

1. Unscrew all screws (they may be hidden under rubber plugs).
2. Insert a plastic spudger into the gap between the cover and the case near the HDMI ports and gently pry it out.
3. Run a spatula around the perimeter until all the clips release. Don't force them—the plastic is fragile!

On NanoCell And QNED The cover is secured with screws around the entire perimeter. LED models (For example, UK6200) you will also have to remove the stand.

2. Localization of the Wi-Fi module

The module looks like a small board with a metal shield and two antenna cables (black and white). LG OLED C1/C2 It is located to the right of the HDMI ports, in NanoCell 86/90 - closer to the center of the motherboard, under the metal screen.

Disconnect the antenna cables by gently pulling on the connectors (not the wires!). If the module is screwed, unscrew them. If it is soldered, heat the contacts with a hair dryer (300–350°C) and remove it with tweezers.

3. Installing a new module

Before installation:

• Check that the connector on the new module matches the connector on the motherboard.
• If the module has screws, do not tighten them too much (light pressure is enough).
• If the module is soldered, use a small amount of solder to avoid short-circuiting adjacent contacts.

Connect the antenna cables in the correct polarity (black - to the connector MAIN, white - to AUX). Mixed up cables will result in a poor signal.

4. Assembly and testing

Reassemble the TV in reverse order. After turning it on:

1. Go to Settings → Network → Wi-Fi connection.
2. If the module is detected but does not find the network, check the antenna cables.
3. If the TV says "Wi-Fi module not detected," turn it off and check the tightness of the module's contacts with the connector.

Common mistakes and how to avoid them

Even experienced technicians sometimes make mistakes when replacing a Wi-Fi module. Here are the most common ones:

• 🔌 Incorrect antenna connection. If you mix up the black and white cables, the signal will be weak or absent altogether. Always check the markings on the module: MAIN And AUX.
• 🔥 Overheating during soldering. Modules LG Sensitive to high temperatures. If you're using a heat gun, keep the temperature below 350°C and don't heat one spot for more than 5 seconds.
• 🧲 Static electricity. A discharge can damage the module's microchips or the motherboard. Always use an antistatic wrist strap or periodically touch a grounded object.
• 🔧 The screws are tightened too much. This may cause cracks in the module's board. Tighten the screws until they are just snug.
• 📶 Ignoring firmware update. After replacing the module, update the TV software via Ethernet or USB - this will help avoid conflicts with the new hardware.

If the module does not work after replacement:

1. Check that the module is seated correctly in the connector (sometimes it may not be inserted all the way).
2. Make sure the antenna cables are not damaged and are firmly seated in the connectors.
3. Try resetting your network settings (Settings → General → Reset → Network reset).
4. If the module is soldered, check the quality of the soldering under a magnifying glass (there should be no jumpers between the contacts).

⚠️ Attention: On TVs LG with a processor Alpha 9 Gen 4 (2021 models and newer) After replacing the Wi-Fi module, calibration may be required via the service menu. To do this, press on the remote Menu → 1105 (code may differ) and select Wi-Fi Calibration.

Setting up the TV after replacing the module

If the new module is detected by the system, all that remains is to configure the network connection:

1. Go to Settings → Network → Wi-Fi connection.
2. Select your network from the list. If it's not there, click Refresh the list.
3. Enter the password. If the connection fails, try:
• 🔄 Reboot the router.
• 📶 Change the Wi-Fi channel in the router settings (for example, with car on 6 or 11).
• 🔒 Disable encryption WPA3 in the router (sometimes older modules do not support this standard).

After connecting, check the speed through Settings → Support → TV Information → Network StatusNormal speed is from 10 Mbps.

If the TV connects to the network, but the Internet does not work:

• Check your DNS settings manually (e.g. 8.8.8.8 And 8.8.4.4 from Google).
• Disable the function on your router AP Isolation (it blocks interaction between devices on the network).
• Update your TV firmware via Settings → Support → Software Update.

On models LG With webOS 6.0 and above, after replacing the module, reactivation of services may be required LG ThinQ And Netflix/YouTubeTo do this:

1. Go to Settings → All settings → General → Reset.
2. Select Resetting LG services (do not confuse with a full reset!).
3. Restart your TV and sign in to your account again. LG.

Frequently Asked Questions (FAQ)

Is it possible to replace the Wi-Fi module with a more powerful one for a better signal?

Theoretically yes, but in practice it rarely produces a noticeable effect. Modules in LG Smart TV limited by the firmware, and even if you install a module with support Wi-Fi 6, the TV will use it in mode Wi-Fi 4 (802.11n). It's better to improve the signal with a repeater or a mesh system.

What should I do if the TV does not turn on after replacing the module?

This is a sign of a short circuit. Immediately unplug the TV and check:

1. Is the module installed correctly (are the contacts shorted?)
2. Are there any foreign screws or metal objects inside the case?
3. The integrity of the cables (perhaps you touched them during assembly).

If the TV still doesn't turn on, contact a service center - the motherboard is probably damaged.

How can I check if the module I was sold is original?

Original modules LG have:

• Marking with article number (for example, 6871QMH008A).
• Branded stickers with logo LG or Murata/AzureWave.
• High-quality soldering without solder drips.

Counterfeits often have blurry markings, crooked contacts, or smell of cheap plastic. You can also compare a photo of the module with the original on the website. LG (in the spare parts section).

Do I need to reflash my TV after replacing the Wi-Fi module?

In most cases no, but:

• If you have installed unoriginal module (for example, Intel 7265 instead of Murata), manual flashing of drivers through the service menu may be required.
• On TVs with webOS 5.0 and older, after replacing the module, it is recommended to update the software to the latest version.

The service menu is opened by a combination of buttons on the remote control (for example, Menu → 1105), but without experience it is better not to experiment.

How much does it cost to replace a Wi-Fi module at a service center?

The price depends on the TV model and region:

• LG OLED C1/C2: 4,000–7,000 ₽ (with spare part).
• LG NanoCell 86/90: 3 000–5 000 ₽.
• LG UK6200/UK6300: 2 000–3 500 ₽.

The cost typically includes diagnostics, module replacement, and adjustment. If you purchase the part yourself, the labor will cost 1,500–2,500 rubles.