TV resets Wi-Fi settings: causes and solutions

You turned on the TV to continue watching your favorite show, but instead you see the familiar window asking you to connect to Wi-Fi. Again. Everything seemed to be working yesterday, but today you're asked for a password again. Why? The TV resets Wi-Fi settings. and how to fix this once and for all?

The problem occurs on devices of all brands - from budget ones Xiaomi Mi TV to bonuses Sony Bravia And LG OLEDMost often, it's not breakdowns that are to blame, but a combination of software glitches and network operating conditions. In this article, we'll look at 7 main reasonsWe'll explain why your TV "forgets" Wi-Fi, and provide step-by-step instructions for each of them. We'll also tell you how to prevent repeated resets.

Spoiler: in 80% of cases, the problem can be solved without calling a technician. But first, you need to accurately determine the source of the problem—it could be the TV, the router, or even your internet service provider's settings.

1. TV firmware issues: when updating isn't a cure-all

The most common reason is - unstable firmwareManufacturers regularly release updates for Smart TVs, but not all of them are sufficiently tested. For example, after updating to Android TV 12 on some models Philips Users complained en masse about Wi-Fi drops. And the owners Samsung QLED 2021 encountered a similar problem after switching to Tizen 6.5.

How to check if the firmware is to blame?

• 🔍 Go to Settings → Support → Software Update and see the current version.
• 📱 Compare it with the latest versions on the manufacturer's official website (section "Support" or "Downloads").
• 📊 Check reviews on forums (for example, 4PDA or Reddit) - if other users complain about the same version, the problem is systemic.

If the firmware is outdated, update it. But Don't do this over Wi-Fi if your network is unstable: an interrupted update could brick your TV.Use a USB drive with the firmware downloaded from the official website.

⚠️ Note: On some models LG (for example, series UK6200) after updating to webOS 5.0+ support for older Wi-Fi standards may be lost (for example, 802.11b). If your router only works in this mode, the TV simply won't be able to connect.

2. IP Address Conflict: Why DHCP Can Be an Enemy

If your TV suddenly loses Wi-Fi connection while other devices are working fine, the culprit could be IP address conflictThis happens when the router assigns the TV an address that's already occupied by another device (for example, a printer or a second TV). Or when the IP lease expires and the router's DHCP server fails to renew it.

How does this manifest itself?

• 📺 The TV connects to Wi-Fi, but after 5-30 minutes the connection is lost.
• 🔄 The message "Obtaining IP address..." or "Authentication error" appears in the network settings.
• 🔌 After rebooting the router, the problem temporarily disappears.

Solutions:

1. Ask the TV static IP address manually:

   Settings → Network → IP Settings → Manual
   IP: 192.168.1.100 (example)
   Mask: 255.255.255.0
   Gateway: 192.168.1.1 (your router's address)
   DNS: 8.8.8.8 (Google) or 1.1.1.1 (Cloudflare)

2. Reduce it in your router settings. DHCP Lease Time (IP lease time) up to 12 hours - this will force devices to update addresses more often.
3. Disable the feature AP Isolation (client isolation) in the router - it can block communication between devices.

3. Incompatibility of Wi-Fi standards: 2.4 vs. 5 GHz

Many modern TVs support both Wi-Fi frequencies - 2.4 GHz And 5 GHz, but they don't always switch between them correctly. For example:

• 📶 The TV connects to 5 GHz, but the signal is weak → switches to 2.4 GHz → loses settings.
• 🔄 The router automatically switches devices between frequencies to balance the load → the TV gets "confused".
• 🚫 Some models (for example, Samsung Crystal UHD 2020) do not support Wi-Fi 6 (802.11ax), but the router tries to connect them in this mode.

Solutions:

Disable automatic switching between 2.4 and 5 GHz on your router.

Set your TV to a fixed frequency (e.g. 2.4 GHz only)

Disable Wi-Fi 6 (802.11ax) support on your router if your TV doesn't support it.

Rename the 2.4 GHz and 5 GHz networks differently (e.g. "MyWiFi_2G" and "MyWiFi_5G")

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If your router supports Band Steering (automatic distribution of devices by frequency), try disabling this function. On some models ASUS And TP-Link It works incorrectly and leads to connection breaks.

⚠️ Warning: On TVs LG OLED C1/C2 when connecting to the network 5 GHz You may experience video stuttering in streaming services (for example, Netflix or YouTube). In this case, it is better to force the TV to switch to 2.4 GHz, even if the speed is lower.

4. Energy-saving functions: when the TV "falls asleep" along with Wi-Fi

Manufacturers add energy-saving features to TVs that are supposed to reduce power consumption. However, these features are often overly aggressive—for example, turning off Wi-Fi after 10 minutes of inactivity. As a result, the TV fails to automatically reconnect the next time it's turned on.

Where can I find these settings?

• 🔌 Samsung: Settings → General → Power Saving → Standby → turn off "Eco mode".
• 📺 LG: Settings → All settings → General → Power saving → set to "Off".
• 🎮 Sony Bravia: Settings → System → Power Saving → disable "Automatic shutdown".

Also check the settings standby mode (Standby Mode). On some models Philips And TCL In this mode, not only the screen but also the network adapter is turned off. The solution is to set the parameter Network Standby: On.

What if there is no option to disable power saving?

On some TVs (eg. Xiaomi Mi TV 4S) Energy-saving features are hard-wired into the firmware. In this case, only a software update or a cable connection (Ethernet) will help.

5. Router problems: from overheating to outdated protocols

Sometimes the problem isn't with the TV, but with the router. Here are the most common scenarios:

• 🔥 Router overheating: If it runs 24/7 in a closed cabinet, it may automatically reboot, resetting all connections.
• 🔒 Outdated security protocols: TVs often do not support new standards (for example, WPA3), but the router may try to apply them.
• 📡 Weak signal: If the signal level is below 30%, the TV will constantly lose connection and try to reconnect.
• 🔄 Frequent channel changes: The router may automatically switch channels to find less congested ones, which leads to connection interruptions.

How to diagnose?

1. Check the temperature of the router - if it is hot, provide ventilation.
2. In the router settings (192.168.1.1 or 192.168.0.1) take a look System log (Log) for authentication errors.
3. Set a fixed Wi-Fi channel instead of auto-select (e.g. channel 6 for 2.4 GHz).
4. Try changing the security type from WPA2/WPA3 on WPA2-PSK (AES) - This is the most compatible mode.

⚠️ Attention: On routers Keenetic And MikroTik the function may be enabled by default Client Isolation, which blocks devices on the same network from communicating with each other. This can prevent the TV from receiving updates or connecting to DLNA servers.

6. DNS Problems: Why Your TV Can't Find the Internet

If your TV connects to Wi-Fi but can't download apps or play videos, the problem may be DNS serversBy default, providers often use their own DNS, which can be unstable or block some services (for example, YouTube or Netflix).

How does this manifest itself?

• 🌐 Messages like "No internet connection" even though there is Wi-Fi.
• 🔄 Apps take a long time to load or give errors DNS_PROBE_FINISHED_NXDOMAIN.
• 📱 The internet works on the phone, but not on the TV.

The solution is to change DNS manually:

1. Go to Settings → Network → Advanced → DNS Settings.
2. Instead of receiving automatically, please specify:

   8.8.8.8 (Google DNS)
   or
   1.1.1.1 (Cloudflare DNS)

3. Restart your TV.

If the problem persists, try alternative DNS:

7. Hardware malfunctions: when repairs are essential

If all software methods have been tried, but the TV still drops Wi-Fi, it is possible hardware failureThe most common failures are:

• 📡 Wi-Fi module — the contact on the board overheats or comes loose.
• 🔌 power unit - does not provide stable voltage for the network adapter.
• 🔋 Capacitors - swell over time, which leads to failures.

How to diagnose?

• 🔍 Check to see if the back panel of the TV is overheating in the area of ​​the Wi-Fi module (usually on the left or right).
• 🔌 Connect your TV to the internet via cable (Ethernet) - if the problem disappears, the wireless module is to blame.
• 📱 Check if the Wi-Fi indicator on your TV is flashing orange or red (this is a sign of a module error).

If you suspect a hardware failure:

1. Take a photo of the back of your TV (especially the sticker with the model and serial number).
2. Call the service center and find out the cost of diagnostics - on many models Samsung And LG Replacing a Wi-Fi module costs 3–5 thousand rubles.
3. If the TV is under warranty, do not open it yourself - this will void the warranty!

⚠️ Warning: On TVs Sony Bravia 2018–2020 the microcircuit often fails BCM4356 (Wi-Fi/Bluetooth module). Replacing it is cheaper than replacing the entire module, but requires soldering.

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

My TV LG CX The Wi-Fi only drops at night. What's wrong?

Most likely, the power saving mode is activated. Go to Settings → All settings → General → Power saving and disable the "Automatically power off when idle" option. Also, check if your router is set to power off on a schedule (some ISPs set up a forced reboot at 3-4 AM).

After updating the firmware of the TV Samsung Q60B I stopped seeing the 5 GHz network. What should I do?

This is a known issue with the versions. Tizen 6.5+Solutions:

1. Roll back to the previous firmware version (if you have a backup).
2. Force the TV to connect to the network 2.4 GHz.
3. Disable support on your router 802.11ac (leave only 802.11n).

If nothing helps, contact support Samsung - They can send a patch.

My TV connects to Wi-Fi, but won't open YouTube or Netflix. What should I check?

The problem is most likely in DNS or regional restrictions:

1. Change DNS to 8.8.8.8 or 1.1.1.1.
2. Check if parental controls or MAC address blocking are enabled on your router.
3. Update your apps YouTube And Netflix in the TV app store.
4. If you use a VPN on your router, disable it—some streaming services block traffic from VPN networks.

Is it possible to connect a TV to the Internet via a USB modem?

Yes, but with some reservations:

• 📌 Most TVs don't support USB modems directly—you need a router.
• 📶 Some models Samsung And LG can work with USB adapters 4G/LTE, but only through special software (for example, Samsung TV Plus).
• 🔄 The best option is to buy an inexpensive router (for example, TP-Link TL-MR6400) and connect a USB modem to it, and the TV via Wi-Fi or cable.

Important: mobile internet speed may not be enough for video in 4K — minimum requirements: 25 Mbps For 4K HDR.

After a factory reset, my TV still won't connect to Wi-Fi. What should I do?

If resetting doesn't help, follow these steps:

1. Make sure your router is in wireless mode. 802.11n (turn off 802.11ac/ax).
2. Try connecting to a different network (for example, from your phone in hotspot mode).
3. Update your TV's firmware via USB (instructions are available on the manufacturer's website).
4. If nothing helps, the Wi-Fi module may be damaged - contact a service center.

⚠️ Note: On some TVs Xiaomi After a reset, your region may be reset. To restore Wi-Fi access, you'll have to manually select your country in the settings (e.g. Russia or Europe).