Issue: After setup, the TV won’t detect connected devices.
Fix:
Check HDMI cables for damage.
Switch HDMI ports or use another cable.
Go to Input → Detect Devices manually.
Ensure the connected device (Roku, Fire Stick, console) is powered on.
Perform a power cycle on your TV (unplug for 60 seconds, then restart).
If your TV is part of a setup involving vizio.com/setup, make sure the network is active and connected properly before detecting devices.