Compatibility & scope
Based on Hisense's English e-manual whose PDF metadata title is E-Manual MT9603 VIDAA U9 NA/SA (the manual prints no date or version; the PDF was created in 2025), downloaded from Hisense Chile (hisense.cl), where it is hosted for the 58Q6QV, 40Q4SV and 50A4NV. These are model codes from Hisense Chile's site; equivalent models elsewhere and other TV brands that run VIDAA may differ, and the manual says menus vary by model, country and region. It documents the self-diagnosis tests and the checks listed here; it describes no network reset option, no specific DNS fix and no on-screen error codes. When the connection test passes but online services still fail, it refers you to your internet provider. Router settings are outside its scope. Documentation reviewed; no TV hardware tested.
In this guide
Start with the TV’s network test
On VIDAA TVs that match Hisense’s 2025 U9 e-manual, press Home, open Settings and go to Support → Self Diagnosis → Network Connection Test. The test confirms whether the TV is connected to your network, and its result decides what to try next:
- The test fails: the TV isn’t connecting. Reconnect to Wi-Fi and work through the router and distance checks below.
- The test passes, but apps or streaming still don’t work: the TV is connected. Hisense says to contact your internet provider at this point.
Before you start
- Your router must be switched on, and you need its network name (SSID) and password.
- You need working TV controls to reach the menus.
- If the TV is connected with a network cable, skip to the network cable section further down.
See what the TV reports
The same Self Diagnosis screen has two more items that are worth a look before you change anything:
- Network Connection Status shows the TV’s network connection information.
- Internet Speed Test checks the connection speed. Use it once the TV is connected but streaming is slow.
You can also run a test from Settings → Connection → Network → Internet Connection → Connection Test, and see the TV’s network details under Network Information on the same screen.
Reconnect to Wi-Fi
- Press Home and open Settings → Connection → Network → Network Configuration.
- Set Connection Type to the wireless connection.
- Choose your network from the list and enter the password. Check upper- and lower-case letters carefully: Hisense singles this out.
- If your network isn’t listed, select Refresh. If it still doesn’t appear (for example, because the router hides its name), select Add and type the network name (SSID).
- Run the Network Connection Test again.
Advanced Settings on the same screen holds further wireless options. The manual doesn’t say when to change them, so leave them alone unless you know your network needs it.
If the test still fails on Wi-Fi
Work through these in order. Each one narrows down where the problem is.
- Check other devices. Connect a phone or laptop to the same Wi-Fi. If that fails too, the problem is the network or internet service: contact your internet provider.
- Move the router closer. Put the router or access point closer to the TV, out of a corner, ideally with no wall between them.
- Reduce interference. Microwaves, mobile phones and other wireless devices on the same frequencies can interfere with the TV. Switch them off or move them away while you test.
- Restart the router. Switch the modem or router off, wait at least 60 seconds, then switch it back on. It may take a while to reconnect to the internet.
- Check the router. Make sure its cables are firmly connected and its lights flash regularly.
- Try a cable. If you can, connect the TV to the router with a network cable. If the wired connection works, Hisense says the problem is with your wireless router or modem.
If none of these helps, restart the TV itself: turn it off, unplug it from the wall, wait 60 seconds, plug it back in and turn it on. Hisense says this doesn’t clear your settings.
If the TV uses a network cable
- Open Settings → Connection → Network → Network Configuration, press OK to open it, and make sure Connection Type is set to Ethernet.
- Check that the cable is firmly plugged into the back of the TV and into the router or modem. A loose cable can cause an unstable connection or none at all.
- Restart the router: off, wait at least 60 seconds, on again.
- Check the router’s cables and lights as above.
The wired IP Settings screen is where you’d enter an IP address, gateway and DNS servers by hand. Hisense recommends a router that hands these out automatically (DHCP), which most home routers do, so you normally don’t need to change anything here.
If the connection keeps dropping
Hisense’s advice for a weak or unstable connection is the same set of checks: on Wi-Fi, move the router closer, reduce interference, restart the router and check its cables and lights; on a wired connection, restart the router and check the router and the network cable at both ends. If Wi-Fi stays unreliable, it suggests switching to a cable.
If nothing works, note the TV model, what the Network Connection Test reported and which checks you tried, and contact Hisense support for your country.
Common questions
Where can I see my TV’s network details, such as its IP address?
The manual points to Settings → Connection → Network → Internet Connection → Network Information, where you choose IPv4 or IPv6 under IP Version to see more detail about the connection. Network Connection Status in Self Diagnosis also shows the connection information. On a wired connection, the IP address itself is listed under IP Settings in Network Configuration.
Should I factory reset the TV to fix Wi-Fi?
The manual doesn’t list a factory reset among its network fixes. A reset clears your personal settings, information and data, so work through the checks above and contact support first. If you do decide to reset, see the VIDAA factory reset guide.
Sources & scope
Pages printed 7–8, 62, 83–84, 89–91, 94–95 (PDF 8–9, 63, 84–85, 90–92, 95–96)
View sourcePDF page = printed page + 1. Consulted: Connecting to the Internet (wired and wireless Network Configuration options), Network (Internet Connection, Connection Test, Network Information), the Troubleshooting entry 'My TV cannot connect to the network', Status Diagnosis (Network Related Self-diagnosis), Restart your TV, and Network Issues with its common solutions. Home and OK button icons checked on rendered PDF 9, 84 and 85. The same text is in the hisense.cl e-manuals hosted as User-Manual-40Q4SV.pdf (PDF 8–9, 61, 82–83, 89–90, 93–94) and User-Manual-50A4NV.pdf (PDF 11–12, 64, 85–86, 92–93, 96–97). The manual's front matter lists no models, date or VIDAA version: model names come from the hosted file names, and VIDAA U9 NA/SA and 2025 from the PDF metadata title and creation date (May 2025; uploaded to hisense.cl in November 2025).
These instructions are based on manufacturer documentation. They have not been device-tested for this guide.
Based on Hisense's English e-manual whose PDF metadata title is E-Manual MT9603 VIDAA U9 NA/SA (the manual prints no date or version; the PDF was created in 2025), downloaded from Hisense Chile (hisense.cl), where it is hosted for the 58Q6QV, 40Q4SV and 50A4NV. These are model codes from Hisense Chile's site; equivalent models elsewhere and other TV brands that run VIDAA may differ, and the manual says menus vary by model, country and region. It documents the self-diagnosis tests and the checks listed here; it describes no network reset option, no specific DNS fix and no on-screen error codes. When the connection test passes but online services still fail, it refers you to your internet provider. Router settings are outside its scope. Documentation reviewed; no TV hardware tested.