Last verified: August 3, 2026. I checked the current Google TV, Samsung, LG, and Sony connection guidance linked below. The diagnostic order remains device- and network-specific; menu names, Wi-Fi bands, and wired options can vary by television model and software version.
If a smart TV is not connecting to the internet, first find where the connection stops: before Wi-Fi, between the TV and router, between the router and internet, or only inside one app. Check the TV's network-status screen, test another household device, and compare one alternate connection before resetting network or factory settings.
Do not begin by changing DNS, factory-resetting the television, or buying a new router. Those actions erase useful evidence or change several variables at once.
Table of Contents
Read the symptom before changing settings
| What you see | Connection stage | First useful test |
|---|---|---|
| Home Wi-Fi name is missing | Radio, distance, band, channel, or router broadcast | Move closer or temporarily test a compatible hotspot |
| Wi-Fi appears but password fails | Password entry, security mode, or saved profile | Re-enter the case-sensitive password and forget/rejoin if supported |
| TV connects to router but says no internet | Modem, ISP, gateway, DNS, or captive portal | Test another device on the same network |
| Every device is offline | Modem, router, or ISP | Check provider status and restart network equipment in order |
| Other devices work but TV does not | TV profile, compatibility, software, or hardware | Run the TV's network test and compare Ethernet or hotspot |
| One app fails but other TV apps work | App, account, service, region, or entitlement | Test another app and the provider's official status page |
| Ethernet works but Wi-Fi does not | Wireless settings, band, security, interference, or TV radio | Keep Ethernet as the diagnostic baseline |
| Wi-Fi works on hotspot but not home router | Router configuration or compatibility | Check router security, bands, DHCP, filtering, and firmware |
Record the television brand, exact model, software version, on-screen error, network-test diagram, and whether the fault began after changing the router, password, internet provider, or TV software.
1. Separate TV-to-router from router-to-internet failure
Open the television's network status or connection test. Menu names differ:
- Google TV commonly uses Settings → Network & Internet;
- current Samsung models provide Settings → Connection or General → Network → Network Status;
- LG menu paths vary by webOS generation under All Settings → General, Connection, or Network.
Samsung's Network Status diagram distinguishes an X between the TV and router from an X between the router and internet. Sony similarly recommends testing another computer or device before blaming the television.
Use these conclusions:
- If every household device is offline, work on the modem, router, or ISP.
- If other devices work but the TV cannot join the router, focus on the TV profile and compatibility.
- If the TV joins the router but no TV app reaches the internet, test gateway, ISP, service, and supported DNS conditions.
- If one app alone fails, do not reset the whole network.
The TV's “No Signal” HDMI message is not an internet error. It means the selected input is not receiving usable video from an external device.
2. Verify Wi-Fi name, password, and saved profile
Confirm Wi-Fi is enabled and select the intended network. Similar network names can represent a guest network, extender, 2.4 GHz band, 5 GHz band, or another household.
Re-enter the password carefully. Sony notes that Wi-Fi passwords are case-sensitive. Check capital letters, numbers, spaces, and easily confused characters using the television's on-screen keyboard.
If the password changed, forget or delete the saved network on the TV when that option exists, then join again. This removes only that saved network profile; it is different from resetting every television setting.
Do not publish or send screenshots that reveal the Wi-Fi password, router-admin password, public IP address, device MAC address, or account credentials.
If the network is working and you want to display a phone or computer, follow the LG TV screen-mirroring guide for AirPlay, Screen Share, Google Cast, Miracast, and HDMI options.
3. Check band and security compatibility
The router and television must share a supported Wi-Fi band and security mode. Exact capabilities depend on the TV model and region.
Google says some Google TV devices require 5 GHz during setup and that WPA2-Enterprise is not supported in its setup flow. Other televisions—especially older models—may support only certain 2.4 GHz or 5 GHz channels and older approved security combinations.
Use the model manual and router documentation to verify:
- 2.4 GHz and 5 GHz support;
- supported Wi-Fi standards and regional channels;
- personal versus enterprise authentication;
- WPA2, WPA3, or transition-mode compatibility;
- whether guest-network client isolation blocks required local features;
- whether MAC filtering or access control rejects the TV.
Do not weaken the entire home network to open or obsolete security merely to connect an old television. A separate appropriately secured compatible network, Ethernet, supported streaming device, or TV replacement may be safer.
4. Restart the television and network in order
Use the television's normal Restart command when available. Then restart network equipment without pressing a factory-reset pin:
- Turn off the TV.
- Disconnect modem and router power using the provider or manufacturer instructions.
- Reconnect the device closest to the incoming internet service first.
- Wait until it finishes booting and its normal service lights return.
- Reconnect the next router or mesh device and wait again.
- Restart the TV and test its network status.
Samsung documents rebuilding the network path from the incoming service toward the TV. LG's current app troubleshooting tells users to reconnect the router first, allow it to boot, then reconnect the TV.
Do not hold a router Reset button. That can erase the network name, password, ISP settings, mesh configuration, port rules, and other household settings.
5. Compare Wi-Fi, Ethernet, and a trusted hotspot
Change only one part of the path:
- connect the TV by supported Ethernet to a router LAN output;
- try another known-good Ethernet cable and router LAN port;
- move the router or a mesh point closer for a Wi-Fi test;
- temporarily test a trusted phone hotspot if the mobile plan permits it.
LG documents connecting the television's LAN socket to a router output and recommends consulting the ISP when the internet service itself fails. Sony recommends another cable or router LAN port for wired faults.
Interpret the result:
- Ethernet succeeds: internet and most TV software are working; investigate Wi-Fi settings, radio, range, or compatibility.
- Hotspot succeeds: investigate the home router, security, DHCP, filtering, or ISP path.
- Neither succeeds while other devices work: update and diagnose the television.
- Neither succeeds on any household device: contact the ISP or network provider.
A hotspot is a short diagnostic, not necessarily a long-term streaming connection. Data limits, speed, latency, and carrier terms still apply.
If the television connects but video buffers or drops quality, use the internet speed needed for streaming guide to compare official service requirements, Wi-Fi overhead, and simultaneous household use.
6. Distinguish one-app failure from internet failure
Open two unrelated TV apps. If one works and another does not, the TV has some internet access.
LG states that a fault in one specific app is likely related to that app, while all installed apps failing can indicate television settings or an internet problem. Check the affected provider's official status, account, regional availability, plan entitlement, device support, and app update.
For one app:
- restart the app and television;
- update the app and TV software;
- confirm the correct account and region;
- clear cache or reinstall only where the manufacturer documents it;
- contact the app provider with the error code.
Do not reset the router because one subscription or app is unavailable. Likewise, a working web browser does not prove every app service is operating.
If the connection works but menus and several apps remain slow, follow the Android TV lag diagnostic for system load, storage, updates, heat, accessory, and aging-hardware checks. Its menu paths apply specifically to Android TV and Google TV devices.
7. Check IP address and DHCP before editing DNS
The router normally assigns the TV an IP address, gateway, and DNS information through DHCP. If the TV has no IP address or shows a self-assigned address, it may not be completing the local-network step.
Sony says an address that is missing, flashing, or begins with 169 indicates an IP-assignment problem in applicable products. First restart the TV and network, forget and rejoin Wi-Fi, and make sure router DHCP and address capacity are available.
Return any old manual IP configuration to Automatic unless the network administrator intentionally assigned it. Do not copy an IP address from another device; duplicate addresses cause intermittent failures.
Change DNS only when the television or manufacturer identifies a DNS-specific failure and you understand the network policy. Google warns that a device replacing DNS can affect Google TV connectivity. DNS cannot correct a wrong Wi-Fi password, missing radio signal, failed ISP circuit, blocked device, or defective TV network adapter.
8. Handle captive portals and managed networks correctly
Hotel, dormitory, office, airport, and apartment Wi-Fi may require a browser sign-in, terms acceptance, device registration, WPA2-Enterprise identity, proxy, or other managed-network control.
Many television setup flows do not support every authentication method. Google documents that WPA2-Enterprise is unsupported in its Google TV setup flow, while Sony notes that networks requiring login authentication, VPN, PPPoE, or proxy arrangements are unsupported on certain products.
Do not bypass the property or employer's access controls. Ask the authorized network administrator whether smart TVs are allowed and how to register the TV safely. A personal travel router or hotspot must also comply with the venue and service terms.
9. Check software, date, and service support
Install the latest software offered for the exact television model. If the TV cannot reach the internet, some manufacturers provide a supported USB update route on the model's official download page.
Check the displayed date, time, and time zone. LG documents automatic internet time on connected smart TVs and a manual option when the current time is wrong. Incorrect time can accompany connection or service-certificate symptoms, but changing it will not repair a failed Wi-Fi or ISP link.
Older televisions may lose app or web support even though basic networking still works. LG notes that app availability and web technology support depend on model year and platform. Confirm whether the manufacturer and app provider still support the exact model before replacing network hardware.
Never install firmware from another model or an unofficial download site.
10. Reset the network before factory-resetting the TV
If supported, a television network reset removes saved network configuration without erasing every picture, account, channel, and app setting. Samsung's current path is commonly All Settings → Connection → Network → Reset Network, but menus vary by model.
Before a full factory reset:
- save the error code and network-test result;
- record the exact TV model and software;
- verify credentials and authenticator access;
- note picture, accessibility, channel, and app settings;
- confirm that another network test failed;
- read the exact model's reset documentation.
Samsung warns that a full reset requires apps to be signed in again. Google and Sony also place factory reset after less destructive checks. A reset cannot fix an ISP outage, incompatible router security, damaged Wi-Fi hardware, or discontinued app support.
When to contact the ISP, router maker, or TV manufacturer
Contact the ISP when all devices are offline, the router lacks an internet connection, or the provider reports a line or account fault.
Contact the router or network administrator when the TV works on Ethernet or a hotspot but not the home Wi-Fi, especially after a router, password, band, channel, security, DHCP, or filtering change.
Contact the television manufacturer when:
- both Wi-Fi and Ethernet fail while other devices work;
- the TV sees no networks even beside a known-working router;
- the network menu, adapter, or MAC address is missing;
- supported updates and a documented network reset do not help;
- the TV repeatedly loses its IP address on multiple networks;
- the unit is under warranty or shows physical damage.
Provide the model, software version, network-test diagram, error code, connection types tested, router model, and whether a hotspot worked. Do not share passwords.
Frequently asked questions
Why is my smart TV connected to Wi-Fi but has no internet?
The TV may have joined the router while the router lacks ISP access, cannot provide a valid gateway or DNS route, or is behind an unsupported login portal. Test another device on the same network and read the TV's network-status diagram.
Why can every device connect except the TV?
The TV may have an old saved password, unsupported band or security mode, blocked MAC address, failed DHCP assignment, outdated software, or network-hardware fault. Compare Ethernet and a trusted hotspot.
Should I change the TV DNS to 8.8.8.8?
Not as a first step. DNS changes cannot fix Wi-Fi association, password, radio, DHCP, ISP, or hardware failures and may conflict with managed networks. Use automatic settings unless the manufacturer or network administrator identifies DNS.
Why does only Netflix, YouTube, or another app fail?
If other TV apps work, investigate the affected app's service status, account, region, plan, compatibility, update, and local app data rather than resetting the entire network.
Does Ethernet prove the TV's Wi-Fi is broken?
It narrows the fault to the wireless path, but configuration, band, security, range, interference, or router compatibility can still be responsible. Test another compatible Wi-Fi network before concluding that the radio failed.
Will a factory reset fix a TV internet problem?
Only when removable television software or settings cause the failure. It will not repair the router, ISP, unsupported authentication, discontinued app, or damaged network hardware.
Once the television is online, use the smart TV app-update guide for separate Samsung, LG, Google/Android TV, and Roku procedures and to distinguish app updates from television firmware.
If the TV connects but room-level speed or stability is poor, use our Wi-Fi optimization and room-by-room measurement guide before buying an extender or new router.
Primary sources
- Google TV Help: Fix problems with your Google TV device
- Google TV Help: Set up your Google TV device and remote
- Samsung: TV will not find or connect to a Wi-Fi network
- Samsung: Reset your TV and run Network Status
- LG: Smart features, app errors, and internet connection
- LG: Set up a wired TV connection
- LG: Clock setup and troubleshooting
- Sony: Internet Access Failed troubleshooting
- Sony: TV can no longer access internet apps and services
Reviewed by Start2Watch on August 2, 2026. Network menus, Wi-Fi bands and security, update routes, reset behavior, app support, and diagnostic screens vary by television brand, model, software version, router, ISP, and region.