If the LOS light on your fiber router or ONT is blinking red, it usually means Loss Of Signal. This guide explains the likely causes, the checks you can do at home, and when the issue needs technician support. When it's green and steady, everything is fine. However, when it blinks red or stays solid red, it signifies a Loss of Signal, a problem preventing your router from communicating. Troubleshoot your router's red light with these steps. Depending on the brand of router, the red light can mean a few different things, but for the most part, it indicates an issue connecting to the internet. Home routers use colored LEDs to convey different. When the internet light is red, there is a problem with our internet connection that needs to be fixed as soon as possible.
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