VIZIO's Wi-Fi article gives the sequence. Press Menu or Gear, choose All Settings if shown, then Network, pick your own network name, enter the password or WPA2 passphrase and select Connect. Passwords are case-sensitive and different from your email, streaming or VIZIO account passwords; find it on the router label, your provider's app or a device already connected. Test another device to see whether the network works: if none connect, restart the modem and router and contact your provider;
The checks in more detail
if others connect but the TV cannot find the network, restart the TV and router and scan again. Restart the modem and router by unplugging for at least ten seconds, plugging the modem in first, then power cycle the TV by unplugging for five seconds and holding its Power button five seconds. To improve the signal, move the TV closer, put the router in an open central place away from microwaves, cordless phones, baby monitors and metal, and try the 2.4 GHz network, which usually has better range.
If the TV says the password is wrong, re-enter it carefully, use Forget Network and reselect it. If connected with no internet, test another device, restart everything, check for an outage and reconnect. DHCP: Menu, All Settings, Network, Manual Setup, DHCP; if off, turn it on, and if on, toggle it. Shared networks in dorms and hotels may need a sign-in page the TV cannot open, so ask the administrator. An onn Roku TV uses Roku's network menus.
A TV that connects but has no internet is a different fault from one that will not connect, and the test is whether a phone on the same network can load a page. Note the time of day the drops happen, since evening congestion on a shared router is a common hidden cause. After a router restart wait a full ten minutes before judging the result, because some routers take that long to hand out addresses again.
Differential
Likely causes of “VIZIO TV line will not connect to Wi-Fi or keeps disconnecting”, and how to tell them apart
- 1
A wrong password
What separates it The TV says the password is incorrect because it was entered wrongly
How to confirm Re enter the password, and use Forget Network, then try again
- 2
A weak or noisy signal
What separates it The connection drops and no network shows because the signal is weak or noisy
How to confirm Move the router closer, or use the 2.4 GHz band, which reaches further
- 3
Connected with no internet
What separates it Apps will not open because the TV is connected but has no internet
How to confirm Restart the modem and the router, and wait for them to settle
- 4
DHCP off
What separates it The TV gets no address because DHCP is switched off
How to confirm Toggle DHCP on, so that the TV can get an address from the router
- 5
A shared network sign-in
What separates it The TV cannot connect because the network needs a shared sign in
How to confirm Ask the network administrator, since the network needs a sign in
Before you touch a setting
Record this first — changing settings destroys the evidence
- Whether other devices can connect to the same network
- How far the TV is from the router
Try in this order
0 of 7 completedChoose the network
ReversibleChoose the network in the Menu, under Network, and select your wifi, and then test again to see whether it helped.
Retype the password
ReversibleRetype the password, remembering that it is case sensitive, and check each character, and then test again to see whether it helped.
Restart modem and router
ReversibleRestart the modem and the router, leaving each unplugged for ten seconds, starting the modem first.
Power cycle the TV
ReversiblePower cycle the TV by leaving it unplugged for five seconds, and then plug it in.
Move closer or use 2.4 GHz
ReversibleMove closer to the router, or use the 2.4 GHz band, to improve the signal.
Toggle DHCP
ReversibleToggle DHCP in the Manual Setup, so that the TV gets an address automatically, and then test again to see whether it helped.
Contact VIZIO or your provider
ReversibleContact VIZIO or your provider if it fails, and tell them what you have tried.
Model-specific
What is true of this model and not of its siblings
- onn Roku TV
- Uses Roku's network menus.
- Older models
- Older TVs may lack 5 GHz.
- Other models this page answers
- These steps also fit the Quantum 4K QLED TV, V-Series 4K TV, M-Series Quantum X TV, OLED H1 TV.
Stop boundary
When this stops being a self-service repair
- !If no device connects, contact your provider about the connection
- !If only the TV fails after every step, contact VIZIO
- !If a shared network needs a sign-in page, contact the administrator
Evidence ledger
Sources behind this answer
Network menu, signal and DHCP steps.
Connection, error codes, reset.
Power cycle, flashing light and CEC steps.
Menu test, picture modes and service triggers.
The company and its products.
Exact questions
Common questions
Where do I connect wifi?+
Connect wifi in the Menu, under All Settings and then Network.
Which band has better range?+
The 2.4 GHz band has better range, though it is slower than 5 GHz.
How long should I unplug the router?+
Unplug the router for at least ten seconds, and then let it start again.
What is DHCP?+
DHCP is automatic network addressing, which gives the TV an address.
Can a hotel network block the TV?+
It may need a sign-in page.
Should I use Forget Network?+
Use Forget Network if the password is rejected, and then enter it again.