The most common causes of this are loss of power to the fiber terminal (ONT) or an unplugged network cable. The other end of this cable should be plugged into the active wall jack or indoor. A woman is issuing a grave warning to homeowners after claiming her property was destroyed in a fire that she says was caused by her Wi-Fi router overheating. Florida resident Keona Huntley, who goes by the name @yeahthatskeeee online, posted a now-viral TikTok video in the aftermath of the fire. This guide will walk you through what the LOS light means, why it blinks red and step-by-step instructions on how to resolve the issue, including resetting your router. Here's what I had to do to avoid getting charged. If that does not resolve your internet issue, you can follow these instructions to check the power to, or restart, your ONT. Not sure if you have an ONT? The video below can help you.