Key takeaways
- TCL's built-in connection test (Settings > Network & Internet > Check internet connection) tells you whether the TV reaches the internet at all.
- Power-cycle numbers are official: TV unplugged 60 seconds, modem/router unplugged 30 seconds.
- If shows Connected, no internet — the TV is attached to the router but not the wider internet; forget and rejoin, then test again.
- 2.4 GHz has better range, 5 GHz is faster but shorter range (TCL's own guidance) — try both if your router splits the names.
- If only one app fails, it's the app, not the Wi-Fi: force-close it, update, reinstall — and check Settings > System > About > System update.
Step 1 — Quick checks
What it means: the fastest five, straight from TCL.
- Make sure another device (phone/tablet/computer) can use your home internet.
- Unplug the TV for 60 seconds, then plug it back in.
- Restart the modem and router: unplug for 30 seconds, back in.
- Make sure Wi-Fi is turned on in the TV settings.
- Run Check internet connection from Settings > Network & Internet.
Step 2 — The TV sees no networks
What it means: radio, position, or router settings.
- Confirm Wi-Fi is on, restart the TV, then the modem and router.
- Move the router closer to the TV if possible.
- Check that other devices can see your network — if they can't, the problem is the router.
- Test with a phone hotspot: if the TV sees the hotspot, the TV is fine and the router or its settings are the issue.
Step 3 — Sees the network but won't join
What it means: passwords and forget/rejoin.
- Select the network, retype the password carefully (same capitalization).
- Restart the TV, then the modem and router.
- If it still fails: Network & Internet, select your network, choose Forget, then reconnect from scratch and run the connection test.
Step 4 — Connected, no internet
What it means: attached to the router, not the internet.
- Confirm other devices reach the internet; if they don't, it's the ISP.
- Restart modem and router, restart the TV, forget/rejoin the network, and rerun the connection test.
- If only the TV fails while others work, try the hotspot test to confirm which side is broken.
Step 5 — Streaming buffers or one app fails
What it means: signal reliability and app-level fixes.
- Move the router closer; keep the TV out of tight cabinets and the router away from large metal objects.
- Pause big downloads on other devices; disconnect idle devices.
- Try both bands if your router has separate 2.4 GHz and 5 GHz names.
- For one broken app: force-close and reopen it, update the app, reinstall it, and check for a system update (Settings > System > About > System update).