The situation when modern Smart TV suddenly refusing to connect to the internet can catch you off guard, especially if you were planning an evening of watching a movie. Usually, the system webOS It works reliably, but software glitches or changes in router settings can disrupt the connection. First of all, don't panic, as in most cases the problem can be resolved using software solutions without calling a technician.
You need to run a basic diagnostic to rule out basic errors. Often, the TV simply "forgets" the saved password, or the router gets stuck in address distribution mode. Check if other devices, such as smartphones or laptops, are connecting to the Wi-Fi. If the internet is available on the devices, LG TV If it says "No connection," then the problem is localized in the TV itself or its interaction with the router.
Start with a simple hardware reboot, as this clears the temporary cache of network modules. Unplug your TV for 30 seconds and leave the router unplugged for a minute. After turning on the equipment, try scanning for networks again. If this doesn't help, proceed to more in-depth configuration.
Basic check of date and time settings
One of the most common and non-obvious reasons why Smart TV can't establish a secure connection, the date is out of date. Security protocols SSL/TLSThe time certificates used to encrypt traffic require the server's time to match exactly. If the TV shows the year 2015 when it's actually 2026, the security certificates will be invalidated.
Go to the settings menu and find the section responsible for system time. Typically, the path looks like this: Settings → All settings → General → Time and dateMake sure "Automatic" is checked. If automatic syncing doesn't work due to a lack of network connectivity, set the current date and time manually.
After adjusting the clock, be sure to perform a full system restart. This action updates security certificates and often allows Wi-Fi module Successfully log in to the network. Without the correct date, the browser and applications will simply not be able to load content.
⚠️ Attention: If the error persists after manually setting the time, the NTP protocol may be disabled on the router or the port required for time synchronization may be blocked.
Changing DNS servers to bypass blocking
Internet providers frequently change their DNS servers, and old addresses may stop responding or work incorrectly. Televisions LG Sometimes they struggle to automatically obtain new DNS addresses from the router. Manually registering reliable servers from Google or Cloudflare is a proven solution.
To change the settings, go to the network menu. You need to find the active connection and select "Edit" or "Advanced settings." In the window that opens, find the field DNS serverUncheck the box next to Automatically Receive and enter the following values:
- 🌐 8.8.8.8 — Google's primary DNS server
- 🌐 8.4.4.4 — Google's alternative DNS server
- 🌐 1.1.1.1 — Fast DNS from Cloudflare
After entering the numbers, press "OK" or "Connect." The TV will attempt to reconnect to the network with the new settings. This method often helps when the connection indicator shows a network, but apps report a network error.
Why is DNS so important?
DNS (Domain Name System) is the internet's phone book. When you enter a website address or launch an app, the TV asks the DNS server which IP address corresponds to that name. If the ISP's server is slow or blocks the request, the TV thinks there's no internet connection, even though there's a physical connection.
Diagnostics via mobile hotspot
To determine whether the problem is in the TV or the router, use your smartphone as a hotspot. Share the internet from your mobile phone (3G/4G/5G) and try connecting to it. LG Smart TVEnter your mobile network password.
If the TV successfully connects to your phone's Wi-Fi and the internet works, then the TV's network module is working properly. The problem lies in your home router settings. Perhaps the MAC address filter is triggered or the DHCP table is full.
If the TV doesn't even detect the phone's network or displays an error when connecting, there's a high probability of a hardware fault with the Wi-Fi module inside the TV. This will require service.
Reset network settings and Quick Start+
Function Quick Start+ On LG TVs, this feature allows the device to boot up faster by leaving some processes running in the background. However, this often leads to a buildup of errors in the network stack. Disabling this feature forces the TV to perform a full system reboot every time it's turned off.
Find the section in the menu General → Advanced → Quick Start+ and turn the switch to the "Off" position. Then, turn off the TV completely using the button on the remote (without unplugging it immediately) and wait until the lights go out. Then, unplug the TV for 1 minute.
It's also a good idea to reset your network settings to factory defaults. This will delete all saved passwords and configurations. Path to this function: Settings → All settings → General → Network → Reset Wi-Fi settingsAfter the reset, re-enter your network password.
Table of error codes and their decoding
System webOS If the connection fails, it may return specific error codes. Understanding their meaning helps you find a solution faster. Below are the most common codes users encounter.
| Error code | Description of the problem | A probable solution |
|---|---|---|
| -101 | No connection to the server | Checking date/time and DNS |
| -105 | Host name not found | Change DNS to 8.8.8.8 |
| -107 | Timed out | Restarting the router and TV |
| -300 | Error connecting to the server | Checking for provider blocking |
If you see a code that's not in the table, write it down and search for it in the official LG support database. Codes are often updated with new firmware versions.
Firmware update and factory reset
If software settings don't help, it might be in the operating system webOS A critical failure has occurred. The firmware update may contain fixes for network modules. Since updating over the internet is not possible, please use a USB flash drive.
Go to the official LG website, find your TV model, and download the latest software version. Unzip the archive and place the file LG_DVB.HEX (or similar) to the root of the flash drive. Insert the drive into the TV's USB port and follow the on-screen instructions.
☑️ USB update algorithm
A radical but effective method is a full factory reset. This will delete all your accounts, apps, and personalization, returning your TV to its out-of-the-box state. Here's how: Settings → All settings → General → Factory reset.
⚠️ Attention: A full reset will delete all installed apps and entered passwords. Make sure you remember your Netflix, YouTube, and other logins to regain access.
Hardware issues and frequency ranges
Modern routers operate in two ranges: 2.4 GHz And 5 GHzOlder LG TV models may not support the 5 GHz frequency or may operate unstable on it. If your router combines networks under a single name, try separating them in the router settings by assigning different names (SSIDs).
Connect your TV to a 2.4 GHz network. This range has lower speeds, but penetrates walls much better and is more compatible with older devices. Also, check if your router has encryption restrictions. For older TVs, the standard WPA2-PSK (AES), while the new one WPA3 may not be supported.
If none of the above helps, and the TV can't detect any networks (even neighbors'), the internal Wi-Fi module is likely faulty. In LG models, this is often a separate board that can be replaced, or it's integrated into the main board.
Why does the TV see the network but not connect?
This is most often an authorization issue. Check your password, encryption type (it should be WPA2), and whether your router is using MAC address filtering. It's also possible that your router has run out of addresses in its DHCP pool.
Is it possible to connect LG TV via cable?
Yes, if your model has a LAN port. A wired connection is more stable and often helps bypass Wi-Fi module issues, allowing you to at least update the firmware or configure DNS.
How to find out the MAC address of a TV?
The MAC address is located on a sticker on the back of the device. It can also be found in the menu: Settings → All settings → General → About TV → TV information.