How to connect an LG 42LM620T ZE TV to Wi-Fi: full instructions with photos and tips

TV LG 42LM620T ZE (2020 release) supports wireless network connectivity, but many users encounter difficulties during initial setup. Unlike modern models with a simplified interface webOS 23, this series works on webOS 5.0, where the network setup menu is hidden deeper, and the connection algorithm is nuanced. Without the correct sequence of steps, the TV may not detect the network and display an error. "Unable to connect" or constantly reset the connection.

In this article we will look at all connection methods — from basic password entry to manual IP address configuration if automatic network detection fails. We'll cover typical errors separately (for example, "Authentication Error" or Weak signal) and how to fix them. If your router uses dual-band Wi-Fi (2.4 and 5 GHz), you'll learn which channel to choose for stable operation. Smart TV.

The instructions are valid for firmware 04.30.85 and newer. If your software version is outdated, see the section at the end of this article on how to update your TV before setting up your network.

1. Preparing to connect: What to check before setting up Wi-Fi

Before you go to the TV menu, make sure the problem doesn't lie with the router or the network itself. Here mandatory checklist:

• 🔌 The router is turned on and the Wi-Fi indicator is on (usually green or blue). If it's blinking orange, reboot the device using the button. Power.
• 📶 The network is visible other devices (smartphone, laptop). If not, check the SSID broadcast settings in the router's admin panel.
• 🔒 Wi-Fi password is known and entered correctly (case is important!). If you forgot it, look at the router sticker or reset the settings.
• 📡 Distance to the router The range does not exceed 10 meters in the presence of walls. For 5 GHz, this figure is even lower—up to 5 meters.
• 🔄 Router operating mode: if enabled "5 GHz only", the TV may not see the network (it supports both ranges, but it is better to start with 2.4 GHz).

Pay special attention broadcast channelSome routers default to channels 12–14 in the 2.4 GHz band, which are not supported in Russia and can cause connection errors. The optimal channels for our country are: 1, 6, 11.

If everything is fine, but the TV stubbornly does not connect, try temporarily disable network protection (set mode Open Network (without a password) and check if the connection is established. This will help determine whether the problem is with the password or the connection itself.

2. Step-by-step instructions: how to connect the LG 42LM620T to Wi-Fi

Let's move on to the main process. On TV LG 42LM620T ZE The network settings menu is hidden in the section All settings, and not on the main screen, as in newer models. Follow the algorithm:

1. Turn on the TV and press the button ⚙️ "Settings" on the remote control (or ⚙️ «Settings», if the remote control is in English).

2. Select an item All Settings → Network → Connect to a Wi-Fi network.

3. The TV will begin scanning. Wait for the list of networks to appear (this may take up to 30 seconds).

4. Find your network in the list and highlight it with the cursor. Click OK on the remote control.

5. Enter the password using on-screen keyboardTo switch the register, use the button «Shift» (up arrow).

6. Confirm your input and wait for the message "Connected"If an error occurs, see section 4.

Important: If your router uses the WPA3 security standard and your TV does not support it (applicable for firmware versions older than 04.30.85), switch the router to WPA2/WPA3 Mixed mode or WPA2 only.

After a successful connection, the TV will prompt you to update the firmware (if a new version is available). Don't refuse This will fix any potential Wi-Fi issues. The update will take 5-15 minutes, depending on your internet speed.

3. Manual connection: if automatic mode does not work

If your TV doesn't connect in standard mode, try manual tuningThis is relevant for networks with a hidden SSID, enterprise authentication, or non-standard IP parameters.

Instructions:

1. On the menu Network → Connect to a Wi-Fi network select Add a network manually.

2. Enter exact network name (SSID) case-sensitive. For example, MyWiFi And mywifi - different networks.

3. Select security type:

   • WPA2-PSK — the most common;
   • WPA/WPA2-PSK — mixed mode;
   • Open - without password (not recommended).

If the connection still fails, check IP settings:

1. In the network menu, select "IP Settings" → "Manual".

2. Please specify:

   • IP address: For example, 192.168.1.100 (the last digit must be different from the router address);
   • Subnet mask: usually 255.255.255.0;
   • Gateway: IP address of the router (for example, 192.168.1.1);
   • DNS: can be specified 8.8.8.8 (Google) or 1.1.1.1 (Cloudflare).

After saving, the TV should be able to access the internet. If not, see Section 5 for diagnostics.

4. Common mistakes and their solutions

Even with the correct settings, the TV LG 42LM620T may produce errors. Let's look at the most common ones:

If the TV connects to the network, but does not open Smart TV or apps, the problem may be in proxy settings or traffic blocking on the router. Go to the router's admin panel (usually at 192.168.1.1) and check:

• 🔓 Absence MAC address blocking;
• 🌐 Disabled parental control;
• 🔄 Absence time limits (for example, blocking the Internet at night).

5. Optimize Wi-Fi for stable Smart TV operation

Even after successful connection, you may encounter video freezing, long loading times for applications or independent disconnection from the networkThis is due to the specifics of the work. webOS 5.0 and router settings.

Here 5 tips to improve your connection:

1. Choose the right range:

   • 📶 2.4 GHz - passes through walls better, but is slower and susceptible to interference;
   • 🚀 5 GHz - faster, but works worse at a distance.

For LG 42LM620T optimal 2.4 GHz on the channel 6 (less busy).

If problems persist, try reset network settings on TV: Settings → Network → Reset network settingsAfter this, repeat the connection from scratch.

6. Firmware Update: Why It's Important for Wi-Fi

Firmware LG 42LM620T affects the stability of Wi-Fi. In older versions (below 04.30.85) there were bugs with connecting to WPA3 networks, hidden SSIDs, and some routers TP-Link/ASUSThe update fixes these issues.

How to update firmware:

1. Connect your TV to the Internet (via Wi-Fi or cable).

2. Go to Settings → Support → Software Update.

3. Select Check for updatesIf a new version is available, click "Refresh".

4. Wait until it is complete (the TV will reboot automatically).

If updating via the Internet does not work, download the firmware from official LG website (select model 42LM620T-ZE) and install it via USB:

1. Download the firmware file (extension .epk).

2. Copy it to the root directory of the flash drive (not to a folder!).

3. Insert the flash drive into the USB port of the TV.

4. Go to Settings → General → Software Update → Update from USB.

What to do if the update is stuck?

Don't turn off the TV! Wait 20-30 minutes. If the indicator light doesn't flash, unplug the power for 1 minute and try again. If the problem persists, contact a service center.

7. Alternative ways to connect to the Internet

If your Wi-Fi is persistently not working, consider alternative options:

• 🔌 Cable connection (LAN): The most stable method. Connect the TV to the router with a patch cord (twisted pair). The speed and ping will be better than via Wi-Fi.
• 📶 USB Wi-Fi adapter: If the built-in module is broken, you can use an external adapter (eg. TP-Link TL-WN725N). Chip adapters are supported RTL8188EU.
• 📱 Mobile hotspotShare your internet connection from your smartphone (select your phone's network in the TV menu). Suitable for temporary use.
• 🔄 Powerline adapters: transmit internet through electrical wiring. Useful if the router is far away and running cables is inconvenient.

For cable connection:

1. Connect one end of the cable to the port LAN on the router, the other one to the port Ethernet on the TV (on the back panel).

2. In the network menu, select "Connection via cable".

3. If the IP is not assigned automatically, configure it manually (see section 3).

If you use USB adapter, first check its compatibility on the LG website. Not all adapters work with webOS 5.0.

8. Diagnosing problems: if nothing helps

If the TV still does not connect, follow these steps: full diagnostics:

1. Check the hardware:

   • Make sure that the TV's Wi-Fi module is working properly (if it is severely physically damaged, repairs may be required).
   • Try connecting your TV to a different network (for example, a smartphone hotspot).

2. Reset your TV settings:

   • Go to Settings → General → Factory Reset.
   • Select Reset network settings (not a full reset!).

3. Check your router:

   • Reset it to factory settings (button Reset on the back panel).
   • Update your router firmware.
   • Try connecting your TV to a router from a different provider (for example, borrow a router from a friend).

1. Turn off the TV.
2. Press and hold the "Menu" button on the remote control.
3. Turn on the TV while continuing to hold “Menu”.
4. After 5 seconds, release the button - the service menu will open.
5. Go to the “Network Test” section to check the Wi-Fi module.