LOS Light Blinking Red on Router? Meaning, Causes
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
Fiber optic router LOS red light
Home / Fiber optic router LOS red light
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. However, when it blinks red or stays solid red, it signifies a Loss of Signal, a problem preventing your router from communicating. First noticed the SH2 flashing purple and lastly moved a unit out the way to get a good view of the Openreach modem. Need to reach out to your ISP and have them diagnose signal loss Did you try turning it off and on again? Good old INACT ONT alarm.
