Modern LG TVs running on the platform webOS, have become full-fledged multimedia centers, capable of streaming content not only from the internet but also directly from other devices on your home network. The ability to display images from a PC or laptop monitor on a large screen without HDMI cables is not just convenient, but a standard for high-quality entertainment. Wireless data transfer allows you to enjoy photos, video archives, and even work presentations on screens measuring 55 inches or more, eliminating the clutter of cables.
There are several proven ways to set up such a connection, and the choice of a specific method depends on the version of your computer's operating system, the TV model, and the type of content being transmitted. DLNA technology ideal for browsing your media library while Miracast or AirPlay 2 are necessary for full desktop cloning in real time. Understanding the differences between these protocols will help you avoid lag and audio desync.
In this article, we'll detail the steps for different usage scenarios, focusing on the nuances of network setup and connection security. You'll learn how to avoid common connection errors and which router settings can block data transfer. Proper hardware configuration is the key to a stable picture without stuttering or buffering.
Technical requirements and equipment preparation
Before starting the setup, make sure all devices involved meet the minimum technical requirements. A fundamental requirement is the presence of the module. Wi-Fi in the computer and technology support Smart TV on an LG TV. If your PC doesn't have a built-in wireless adapter, you'll need an external USB Wi-Fi receiver that supports at least 802.11n.
It's crucial that all devices are on the same local network. This means that both the TV and computer must be connected to the same router. If you have a dual-band router broadcasting 2.4 GHz and 5 GHz networks, it's advisable to connect both devices to the same band. 5 GHz to ensure high bandwidth, especially when transmitting 4K video.
⚠️ Note: Using a guest network on your router may block devices from discovering each other. For DLNA and Miracast to work properly, ensure the devices are on the main network with local sharing enabled.
It's also worth checking that the software is up to date. On your LG TV, go to the menu Settings → All settings → Support → Software update and run the check. Outdated firmware webOS may not contain the necessary security certificates or drivers for new versions of data transfer protocols.
Using the Cast feature in Windows 10 and 11
Windows operating systems have a built-in tool for wireless image output based on the standard MiracastThis method allows you to completely mirror your monitor's screen onto your TV, which is convenient for showing presentations or browsing the web. To get started, press the [Microsoft] button on your LG TV remote control. Input (or the house icon) and select the app Screen Share or Connecting to a mobile device.
On your computer, open the Action Center by pressing the key combination Win + A, and select the tile ProjectIf there is no such tile, go to Settings → System → Project to this PCThe system will begin searching for available displays. Your LG TV should appear in the list. After selecting the device, a connection confirmation prompt may appear on the TV screen. Accept this prompt using the remote control.
Image quality directly depends on the Wi-Fi signal strength and channel congestion. Miracast creates a direct connection or uses a local network to transmit the video stream with minimal compression. However, if you notice cursor lag or image stuttering, try lowering your PC's screen resolution or moving the computer closer to the router.
☑️ Check before connection
It's worth noting that this method isn't suitable for fast-paced games due to the inevitable input lag, which can range from 50 to 200 ms. This isn't critical for static content or video, but you may experience discomfort in shooters or fighting games. In such cases, a cable connection or specialized gaming consoles are preferable.
Setting up a DLNA server to view media files
If your goal is not to duplicate your desktop, but to play videos, music, or photos stored on your computer's hard drive, the best solution is a technology DLNAThis allows the TV to view your PC's folders as network resources. In Windows 10 and 11, this feature is implemented through "Media Streaming Settings." Open the Control Panel, find the Media section, and click "Turn on Media Streaming."
In the window that opens, you'll see a list of devices on the network. Find your LG TV and check the box in the "Allowed" column. This will grant access to the default libraries (Videos, Music, Pictures). To add your own content folders in Windows 11, go to Settings → System → Media experience → Advanced streaming options.
| Parameter | Description | Recommended value |
|---|---|---|
| Protocol | Connection type | DLNA / UPnP |
| Net | Windows network type | Private |
| Formats | Supported codecs | MP4, MKV, JPEG, MP3 |
| Security | Access to resources | TV approved |
After setting up your LG TV, launch the app Photos and Videos or Media playerSelect your computer from the source list. The folder structure will be displayed according to your Windows library settings. If your TV doesn't see files of a certain format, it might be the built-in player. webOS does not support this codec, and then you will need to install a third-party player, for example, VLC for WebOS, if it is available in the app store.
Problems with codecs and formats
If your LG TV recognizes folders but can't open files, or displays an "Unsupported format" error, the problem lies in the video container or audio track. LG TVs work well with H.264 and AAC, but may have difficulty with HEVC (H.265) in free versions or specific audio codecs like DTS. In such cases, use third-party player apps on the TV itself that have built-in codecs.
Broadcasting via Google Chrome browser
A universal tool that works on any operating system (Windows, macOS, Linux) is a browser Google ChromeIt has a built-in Cast function, which allows you to cast a tab or the entire screen to devices that support Chromecast or compatible protocols. Many modern LG models have built-in Chromecast support, or this feature can be activated via an update.
To launch, open your browser, click on the three dots in the upper right corner and select Save and Share → Broadcast... (or simply Broadcast). In the window that appears, select the source: this can be the current tab, the entire desktop, or a specific file. Then, find your LG TV in the list of devices.
This method is especially convenient for watching online videos from websites that don't have a built-in cast button on your Smart TV. However, it's important to keep in mind that casting a tab places a strain on your computer's processor, as it encodes the video stream and sends it over the network. This can lead to increased power consumption and increased laptop heating.
⚠️ Note: When streaming through Chrome in high definition (1080p and above), audio and video may become out of sync. If this occurs, try lowering the quality in the streaming settings or rebooting your router to free up bandwidth.
Using AirPlay 2 for macOS users
Owners of Apple MacBook and iMac computers are in luck, as modern LG TVs support the technology. AirPlay 2 Natively. This means you don't need to install any additional apps to display the image. Both devices only need to be on the same Wi-Fi network.
In the macOS Control Panel (upper right corner), click the icon Screen mirroring (two rectangles). Select your LG TV from the list of available devices. When connecting for the first time, a four-digit code may appear on the TV screen. Enter this code on your computer to confirm the trusted connection.
AirPlay 2 ensures high stability and high-quality images, automatically adapting the bitrate based on signal quality. Furthermore, this technology allows you to use your TV as a second monitor in extended mode, not just mirrored. To do this, select "Stop as separate display" in macOS Displays settings.
Solving common connection problems
Despite the simplicity of setup, users often encounter situations where the computer can't detect the TV or the connection constantly drops. Most often, the problem lies in Windows Firewall or antivirus settings that block incoming connections to media servers. An exception for the "Media Server (DLNA)" service must be added in the security settings.
Another common cause is an outdated wireless adapter driver. Go to Device Manager → Network Adapters, find your Wi-Fi module and select "Update driver." Also, try temporarily disabling any VPN services if they're active, as they change the network address and can hide the device from the local network.
If none of the above works, reset your network settings. On an LG TV, you can do this via Settings → All settings → Support → Self-diagnosis → Reset network settingsOn your computer, use the reset command in the command line: netsh winsock resetAfter rebooting both devices, the problem usually disappears.
Frequently Asked Questions (FAQ)
Why doesn't my LG TV show up in the list of available devices on my PC?
Most likely, the devices are connected to different networks (for example, one to a guest network and one to the main network) or AP Isolation is enabled on the router. Also, check if your antivirus software is blocking network discovery.
Is it possible to transfer images from a computer to an old LG TV without Smart TV?
Without Smart TV, direct Wi-Fi streaming is not possible. You'll need to purchase an external set-top box (Android TV Box, Chromecast, Apple TV) or use an HDMI cable to connect your PC and TV.
Does streaming images affect internet speed?
When using Miracast and DLNA technologies, traffic flows within the local network and doesn't consume internet bandwidth. However, if you're streaming online video (via a browser), your internet speed will be used as normal.
How can I improve the quality of a picture if it looks blurry?
Check your computer's screen resolution—it should match the native resolution of your TV (usually 1920x1080 or 3840x2160). Also, make sure your TV's picture mode is set to "Standard" or "Movie," not "Vivid," which can distort colors.