the tv won't connect to my 5ghz wifi, only finds the 2.4, my other devices work fine

Diagnosis

Your LG TV's wireless hardware or software has limited 5GHz band support. It cannot detect the specific channel your router is currently using, often because the router is set to a DFS (Dynamic Frequency Selection) channel (52-144) or a high-band channel (149-165) that the TV's wireless module doesn't recognize. This is a common compatibility issue with some smart TVs.

How to Fix It

1. Access your router's admin settings via a web browser on a computer or phone.
2. Locate the wireless settings for your 5GHz network.
3. Manually change the 5GHz channel to a lower, non-DFS channel like 36, 40, or 44.
4. Apply the settings and allow your router to reboot.
5. On your LG TV, go to All Settings > Connection > Network > Wi-Fi Connection and select Scan again. Your 5GHz network should now appear.

If That Didn't Work

First, perform a power cycle: unplug the TV and your router for 60 seconds, then plug them back in. If the issue persists, reset the TV's network settings (Settings > General > Reset to Initial Settings > Network Settings Reset). As a last resort, the internal Wi-Fi antenna cable connection could be loose; securing it requires opening the TV's back panel, which should only be attempted if you are comfortable with electronics repair.

Heads Up

Forcing your router to use a standard low-band channel (36-48) is the most reliable fix. Avoid "Auto" channel selection on your router, as it frequently chooses DFS channels that many TVs cannot see.