Modern televisions LG Smart TV They've moved beyond being simple devices for watching broadcast television and have become full-fledged multimedia centers. One of the most sought-after features is the ability to wirelessly display images from a computer or laptop on a large screen. This is especially relevant for presentations, watching movies, or even gaming, when the distance to the monitor is limited. wireless connection allows you to get rid of unnecessary cables while maintaining high picture quality.
In this article, we will discuss in detail how to connect a TV. LG to your computer via WiFi, turning it into a second monitor or completely duplicating the screen. We'll look at the operating system's built-in features. Windows, as well as specialized applications from the manufacturer. Understanding the principles of protocol operation Miracast And DLNA will help you choose the optimal broadcasting method for your needs.
It's worth noting that connection quality directly depends on your router's power and location. For stable, high-definition video streaming, 4K or 1080p A reliable connection is required. If you plan to use your TV for word processing or fast-paced gaming, it's important to minimize input lag, which is possible with a properly configured network.
Technical requirements and equipment preparation
Before you begin setting up, you need to make sure your equipment meets the minimum requirements. First and foremost, both your TV and computer must support the standard. Wi-Fi Direct or have a built-in wireless module. Most modern models LG with a platform webOS already equipped with all the necessary functionality "out of the box".
The second critical requirement is that both devices must be on the same local network. This means the computer and TV must be connected to the same router. If you're using a guest network or different frequency bands with client isolation, device discovery may be impossible. Make sure your router doesn't restrict data exchange between clients.
⚠️ Attention: When using the 2.4 GHz band, the video stream may become unstable due to airwave congestion. For high-quality image transmission, it is strongly recommended to use the 2.4 GHz band. 5 GHz, if your router and TV support this standard.
It's also worth checking the network card driver versions on your PC. Outdated software may not work correctly with new encryption protocols or media transfer standards. Updating drivers often resolves issues with finding devices on the network.
Method 1: Using the "Connect to a wireless display" feature in Windows
The easiest and most native way to turn your TV LG on the second monitor - use the built-in function of the operating system Windows 10 or Windows 11This method is based on technology Miracast, which allows you to transmit high-quality video and audio with minimal latency. First, make sure your TV's signal reception function is enabled.
On the TV remote control LG find the button that says Input or the house icon. In the signal sources menu, select the option Screen Share or Connection GuideOn some models, simply unlocking the TV screen will make it visible for searching if Smart Share is enabled in the network settings.
Now let's move on to the computer settings. Press the key combination Win + K on the keyboard. The "Connection" panel will open on the right, where the system will begin searching for available wireless displays. Your TV should appear in the list. LGClick on it, and after a short pairing process, the image from your desktop will appear on the big screen.
- 📺 Duplication: The computer screen is completely mirrored onto the TV, which is ideal for presentations.
- 💻 Expand: The TV becomes a second desktop, allowing you to drag windows between monitors.
- 🖥️ Second screen only: The image on the computer monitor goes out and is displayed only on the TV.
Once connected, you can adjust the resolution and image orientation through the menu. Screen parameters in Windows. The system will automatically detect the TV as an external monitor and offer optimal scaling settings.
☑️ Check before connection
Method 2: LG TV Plus and Smart Share App
If standard Windows tools are unstable or you require deeper integration, you can use proprietary software from LG. Application LG TV Plus (formerly known as LG Remote) is available in the Microsoft Store and allows you to not only control your TV but also stream content. However, the protocol is more commonly used for monitor functionality. DLNA using standard Windows tools.
To activate DLNA, make sure that in the TV settings, under Network option enabled DLNA Image Viewer Or similar. On your computer, open File Explorer, find the video or photo you want, right-click it, and select "Cast to Device." Select your TV from the list. LG.
This method is ideal for browsing your media library, but it's not suitable for using the TV as a full-fledged interactive monitor for working with documents or browsing. The image is broadcast as a media file, not as a desktop video stream.
| Characteristic | Miracast (Wireless Display) | DLNA (Media Broadcast) | HDMI (Cable) |
|---|---|---|---|
| Transmission type | Desktop Stream | Media files | Digital signal |
| Delay | Low / Medium | Absent | Absent |
| Interactivity | Full | Limited | Full |
| WiFi addiction | High | High | No |
The method you choose depends on your goals: use Miracast for work and gaming, and DLNA for viewing photos and videos from your computer.
Adjusting image and sound settings
After successful connection, it is important to correctly configure the image output so that the picture on the TV LG looked sharp and didn't hurt the eyes. TVs often use excessive post-processing by default, which blurs text. Switch the picture mode in the settings. Game or PC via the TV menu (Settings → All settings → Image).
In the Windows operating system, it's also worth checking the screen refresh rate. For dynamic content, it's advisable to set the value 60 Hz or higher, if your WiFi channel bandwidth allows. This can be done in the menu. System → Display → Advanced display settings.
⚠️ Attention: TV interfaces and operating systems are updated regularly. The layout of menu items may vary depending on the firmware version. webOS (e.g. 4.0, 5.0, 6.0, and later). If you don't find this option, try searching in your TV settings.
Regarding sound, by default Windows may continue to output audio through your laptop's built-in speakers. To change this, click the speaker icon in the system tray, select the output device, and select your TV. LG or a receiver if the sound is transmitted through it.
How to improve text clarity on TV?
In your TV's picture settings, disable all anti-aliasing and noise reduction features. Set the display to "Screen Only" or "Game" mode to minimize input lag and make fonts more readable.
Troubleshooting and Delays
Wireless connections are always susceptible to interference. The most common issues are audio and video desync or cursor lag. This is often due to the WiFi channel being overloaded by neighboring networks or household appliances. Try rebooting your router and disconnecting any strong sources of radiation from the network.
Another common mistake is using outdated encryption standards. Make sure your WiFi network is secured with a protocol. WPA2 or WPA3Old encryption methods can limit data transfer speeds, which is critical for high-definition video streams.
- 🔄 Reboot: Turn your TV and router off and on to reset the network settings cache.
- 📡 Distance: Move your computer closer to the router or make sure there are no thick walls between them.
- 🛡️ Antivirus: Temporarily disable your firewall to check if it is blocking the connection.
If the problem persists, try disabling power saving mode for your WiFi adapter in Windows power settings. Your computer may be reducing its transmit power to conserve power, which can cause connection drops.
Comparison of wired and wireless connections
Despite the convenience of WiFi technology, it is important to understand its limitations compared to traditional cable. HDMIWireless connections always introduce some delay (latency), which may be unnoticeable when watching movies, but is critical in fast-paced shooters or when working with graphics.
A wired connection guarantees stable data transfer without compression or artifacts. However, a cable limits mobility and requires additional wiring. The choice between WiFi and cable should be based on specific needs: WiFi is sufficient for office work and filmmaking, while cable is better for professional design and eSports.
Modern standards Wi-Fi 6 They significantly improve the situation, offering speeds comparable to wired connections, but they require support from all devices in the chain: the router, the PC's network card, and the WiFi module in the TV.
FAQ: Frequently Asked Questions
Is it possible to connect a MacBook to an LG TV via WiFi?
Yes, it's possible, but you won't be able to use standard macOS tools directly via Miracast, as Apple uses its own AirPlay protocol. You'll need either a TV that supports it Apple AirPlay 2 (many new LG models can do this), or install a third-party receiver application on the TV itself from the LG Content Store, for example, "AirPlay & Cast Receiver".
Why is my TV not visible in the list of available displays?
Most often, the problem is that the devices are on different subnets (for example, one is connected to a guest WiFi network and the other to the main network). Also, check whether your antivirus or Windows Firewall is blocking device detection. Ensure that "Projecting to this PC" is enabled in Windows settings.
Does connecting a second screen affect internet speed?
Yes, streaming video over WiFi creates additional bandwidth. If you're watching 4K video on your TV via WiFi, the download speeds of other devices on the network may temporarily decrease, especially on the 2.4 GHz band.
How do I turn off the sound on my computer while leaving it on my TV?
In Windows 10 and 11, when connecting a wireless display, the sound often switches automatically. If this doesn't happen, click the speaker icon in the system tray and manually select the audio output device corresponding to your LG TV.