Why doesn't my TV remember my Wi-Fi password and how can I fix it?

You entered the Wi-Fi password on your TV, and it connected to the network—but after turning it off or restarting, the connection is lost, and you have to re-enter the password. Sound familiar? This problem occurs on Smart TVs of all brands, from budget ones Xiaomi Mi TV to bonuses Sony Bravia or Samsung QLEDIn 80% of cases, the culprit is not a breakdown, but software glitches or incorrect settings.

In this article we will look at 7 main reasons, why the TV doesn't remember the Wi-Fi password, and we'll give step-by-step instructions to fix them. You'll learn how to check your router settings, update your TV firmware, reset network settings, and even manually enter DNS—without calling a technician. We'll pay special attention to models with Android TV, webOS (LG) and Tizen (Samsung), where the solution algorithms differ.

Spoiler: in 60% of cases, a simple router reboot or resetting the network settings on the TV helps. But if the problem is more complex, we have solutions for that, too.

1. TV memory failure: why does the password disappear after turning off?

The most common reason is - corruption of network configuration files in the TV's memory. This happens because:

• ⚡ Abrupt power outage (pulled the plug out of the socket while working).
• 🔄 Incorrect firmware update (interrupted or with errors).
• 🗑️ Cache overflows (especially relevant for Android TVs with limited memory).

For example, on LG OLED With webOS Wi-Fi settings often reset due to a bug in the module Wi-Fi Direct, which conflicts with the main connection. And on Samsung Crystal UHD The problem may lie in the power saving mode, which clears temporary network files when turned off.

How to check? Go to Settings → Network → Network StatusIf the TV shows the "Connected" status, but after rebooting it asks for a password again, a memory error is to blame. This can be resolved resetting network settings (instructions below) or manual editing of the configuration file (for advanced users).

2. Router issues: Why the TV doesn't save the password due to network settings

In 30% of cases, it is not the TV that is to blame, but routerHere are the key router settings that may be causing the problem:

How to check? Connect another device (smartphone, laptop) to the same Wi-Fi network and reboot the router. If the problem persists only on the TV, the TV is to blame. If it crashes on other devices as well, The problem is 100% in the router settings, not the TV..

⚠️ Attention: On some routers (for example, Keenetic or ASUS RT-AX) After a firmware update, Wi-Fi security settings are reset. If the TV stopped remembering the password after upgrading the router, check if the encryption type has changed. WPA2 on WPA3.

3. Outdated Firmware: How a Software Update Fixes Wi-Fi Issues

Manufacturers regularly release patches to fix network bugs. For example:

• 📺 Samsung QLED 2020–2022: in firmware versions up to version 1450.5 There was a bug with saving passwords for networks with Cyrillic characters.
• 🎮 LG CX/OLED 2019–2021: before the update webOS 5.5.0-4237 Wi-Fi settings were lost while using IPv6.
• 🤖 Xiaomi Mi TV 4S/5: in older versions Android TV 9 Saving passwords longer than 20 characters did not work.

How to update firmware:

1. For Samsung: Settings → Support → Software Update → Update Now.
2. For LG: All settings → General → About TV → Check for updates.
3. For Android TV (Sony, Philips, Xiaomi): Settings → Device → System update.

Unplug the TV (remove the power cable for 1 minute)

Connect the TV to the router via cable (if there is an Ethernet port)

The remote control battery charge must be >50%

Do not press any buttons on the remote control during the update.

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If your TV can't find updates online, download the firmware from the official website to a USB flash drive and update it manually. To do this:

1. Format the flash drive to FAT32.
2. Download the firmware file (for example, for Samsung this is a file with the extension .exe, for LG - .epk).
3. Place the file in the root of the flash drive and insert it into the USB port of the TV.
4. Go to Settings → Support → Software Update → Update Now and select the "USB device" source.

⚠️ Attention: On TVs Sony Bravia For TVs produced in 2018–2020, the region may reset after a manual firmware update. If your TV stops showing Russian channels after upgrading, go to Settings → Settings → Region and select "Russia" manually.

4. IP address conflict: why does the TV “lose” the network after sleep?

If the TV connects to Wi-Fi, but after going into sleep mode or turning off it “forgets” the password, it’s the fault IP address conflictThis happens when:

• 🔢 The router assigns a dynamic IP to the TV, which is then occupied by another device after a reboot.
• 🔄 There are two devices on the network with the same static IP (for example, a TV and a printer).
• ⚡ The IP address is manually entered in the TV settings, but it is outside the router's DHCP range.

How to fix:

1. Go to your router settings (usually at 192.168.1.1 or 192.168.0.1).
2. Find the section DHCP or Local area network.
3. Reserve an IP address for the TV's MAC address (the "Bind IP to MAC" option or DHCP Reservation).

To manually configure IP on your TV:

• On Samsung: Settings → General → Network → IP Settings → Manual.
• On LG: All settings → Network → Wi-Fi connection → Additional settings → Manual IP setup.
• On Android TV: Settings → Network & Internet → Wi-Fi → [your network] → Advanced settings → IP settings.

Use an IP address from your router's range (e.g. 192.168.1.100, if the router has an address 192.168.1.1), subnet mask 255.255.255.0, the main gateway is the router's IP, DNS is 8.8.8.8 (Google) or 1.1.1.1 (Cloudflare).

5. Resetting network settings: a radical solution to the problem

If the previous methods did not help, there remains reset network settingsThis will delete all saved networks and restore factory settings, but will not affect other data (apps, accounts).

Instructions for different brands:

• 📺 Samsung:
  1. Settings → General → Network → Reset network settings.
  2. Enter your PIN (default) 0000 or 1234).
  3. Confirm reset.
• 🎬 LG:
  1. All Settings → Network → Reset Wi-Fi.
  2. Select "Remove all networks".

🤖 Android TV (Sony, Philips, Xiaomi):

1. Settings → Network & Internet → Wi-Fi → Additional settings → Remove network.
2. Long press your network name and select Forget.

After reset:

1. Restart your TV (unplug it from the power outlet for 30 seconds).
2. Reconnect to Wi-Fi by entering the password.
3. Check if the connection remains after reboot.

⚠️ Attention: On TVs Sony Bravia With Android TV 8–9 After resetting the network, you may be required to re-authorize your Google services (YouTube, Play Store). If the TV asks for your account login and password, enter the credentials for the same Google account that was previously linked.

What should I do if after a reset the TV doesn't see any networks at all?

If after resetting the settings the TV stops detecting any Wi-Fi networks, check:

1. Hardware Wi-Fi button (Some Samsung and LG models have a physical switch on the back panel).

2. Airplane mode: go to Settings → Network → Airplane Mode and turn it off.

3. Router settings: Temporarily disable MAC address filtering and check if the networks appear.

If the problem persists, this may indicate a faulty Wi-Fi module in the TV (repair is required).

6. DNS issues: Why does the TV connect but not remember the password?

A rare but insidious reason - Incorrect DNS settingsIf the TV connects to Wi-Fi, but after rebooting it asks for a password again, and the network status displays the error "Limited connection" or "No internet access," the DNS server is at fault.

How to check:

1. Go to the Wi-Fi settings on your TV.
2. Find the "DNS" section (on Samsung This Settings → General → Network → Network Status → IP Settings).
3. If there are strange addresses written there (for example, 0.0.0.0 or your router's IP) - they need to be changed.

Recommended DNS servers:

• 🌍 Google DNS: 8.8.8.8 And 8.8.4.4
• ☁️ Cloudflare: 1.1.1.1 And 1.0.0.1
• 🛡️ Yandex DNS (for Russia): 77.88.8.8 And 77.88.8.1

How to enter DNS manually:

For Samsung:
Settings → General → Network → Network Status → IP Settings → DNS → Manual

For LG:
All settings → Network → Wi-Fi connection → [your network] → Additional settings → DNS settings

For Android TV:
Settings → Network & Internet → Wi-Fi → [your network] → Advanced settings → IP settings → Static → DNS 1 and DNS 2

7. Hardware malfunctions: when repairs are essential

If none of the methods helped, the problem may be in hardware:

• 📡 Faulty Wi-Fi module (often found on cheap TVs after 3-5 years of use).
• 🔋 Swollen capacitors on the power board (lead to memory failures).
• 🔌 Problems with the power supply (insufficient voltage for stable operation of the Wi-Fi module).

How to diagnose:

• Connect your TV to the router via Ethernet cableIf the password saving problem disappears, the Wi-Fi module is to blame.
• Look at the back of your TV: if there's a physical Wi-Fi button, try switching it (sometimes it accidentally turns off).
• Check to see if your TV is getting hotter than usual. Overheating can cause memory problems.

Repair cost:

⚠️ Attention: On TVs Xiaomi Mi TV 4/4S the memory chip often fails eMMC, which is responsible for saving Wi-Fi settings. If your TV fails to remember not only the network password but also other settings (brightness, channels) after a reset, this is a sure sign of memory failure. In this case, repairs will cost between 3,000 and 8,000 rubles, depending on the model.

FAQ: Frequently asked questions about Wi-Fi issues on your TV

The TV connects to Wi-Fi, but after unplugging it, it asks for the password again. What's wrong?

This is a typical sign non-volatile memory failure (NVRAM). The TV only stores settings while power is on, and they are reset when completely disconnected. Solutions:

1. Update your TV firmware to the latest version.
2. Reset your network settings (instructions in section 5).
3. If the problem persists, the memory chip is faulty (repair is required).

My LG TV stopped remembering my Wi-Fi password after the webOS update. How can I revert to the previous firmware?

Rollback firmware to LG Not officially supported, but you can try:

1. Download the previous firmware version from the website lg.com (support section).
2. Place the file .epk on a flash drive formatted in FAT32.
3. Insert the flash drive into the TV, go to Settings → General → About TV → Software Update and select manual installation.

⚠️ Risk: After downgrading, some features (such as Disney+ or Prime Video) may stop working.

My Samsung TV won't remember my 5GHz Wi-Fi password, but it works fine with 2.4GHz. What's wrong?

This is a known bug in TVs. Samsung 2018–2020 on the platform TizenThe reason is incompatibility with encryption. WPA3 or channel width 160 MHz in the 5 GHz range. Solutions:

• Change the 5 GHz settings on your router:
  • Encryption: WPA2-PSK (not WPA3!).
  • Channel width: 80 MHz or 40 MHz.
• Update your TV firmware to version 1460.5 or newer.

After resetting my TV to factory settings, it stopped detecting any Wi-Fi networks. What should I do?

Possible causes and solutions:

1. Wi-Fi module failure: Check if the Wi-Fi indicator on your TV is lit (if applicable). If not, the module is faulty.
2. Disabled adapter: on some models Sony And Philips Wi-Fi can be disabled in the developer menu. To enable it:

   Settings → Device → Developer options → Network interfaces → Wi-Fi (ON)

3. Regional restrictions: If your TV was purchased abroad, it may not be able to connect to local networks. This can be resolved by changing the region in the settings.

Is it possible to connect a TV to Wi-Fi without entering a password each time using WPS?

Yes, but this is a temporary solution. Algorithm:

1. Press the button on the router WPS (usually located on the back panel).
2. On the TV, go to Settings → Network → Wi-Fi Connection → WPS.
3. Select "Connect via WPS" and wait for the connection.

⚠️ Disadvantages of the method:

• You will still have to enter the password after resetting the settings.
• Not all routers support WPS (especially new models).
• This is less secure than a regular connection.