TV or streaming box won't connect
A television that won't connect is almost always a network problem, not a television problem.
What's usually going on
Smart TVs and streaming boxes have weaker Wi-Fi than phones and laptops, and they are usually the device furthest from the router, often behind a wall or inside a cabinet. They are also the last thing anyone updates.
Worth trying first
Restart both ends.
Unplug the TV or streaming box from the wall for a full minute, and restart the router. This fixes more than it should.
Check another device in the same spot.
Hold your phone next to the TV and play a video. If the phone struggles there too, the problem is Wi-Fi coverage in that room, not the TV.
Rejoin the network.
In the TV's network settings, forget the Wi-Fi network and join it again, typing the password carefully. Make sure it is your main network, not a guest one.
Update it.
Look for a system or software update in settings. TVs left for months often stop working with newer apps.
Use a cable if you can.
If the router is nearby, a network cable from the router to the TV is more reliable than any Wi-Fi.
When to hand it over
If it keeps buffering in the evenings, drops off every few days, or the whole room has weak Wi-Fi. That is usually a coverage problem, which we can diagnose remotely and, in New York City, fix in person.
Your own technologist, on call.
Tell us a little about your setup. We'll take it from there.