https://helpforum.sky.com/t5/Broadband/Ont-problem/m-p/4937886#M473844 <P><a href="https://helpforum.sky.com/t5/user/viewprofilepage/user-id/4354120">@Melanie--</a>&nbsp;</P> <P>&nbsp;</P> <P>LOS is Loss Of Signal, which typically means a failure in the optical fibre circuit somewhere outside the subscription address.</P> Sat, 15 Mar 2025 19:07:41 GMT TimmyBGood 2025-03-15T19:07:41Z https://helpforum.sky.com/t5/Broadband/Ont-problem/m-p/4937877#M473841 Hiya just wondering if anyone can help please before I contact sky themselves. The red light is on for Los on my ont does anyone have any idea what could cause this? I've tried re starting everything but it is still there. Thanks Sat, 15 Mar 2025 18:37:16 GMT https://helpforum.sky.com/t5/Broadband/Ont-problem/m-p/4937877#M473841 Melanie-- 2025-03-15T18:37:16Z https://helpforum.sky.com/t5/Broadband/Ont-problem/m-p/4937886#M473844 <P><a href="https://helpforum.sky.com/t5/user/viewprofilepage/user-id/4354120">@Melanie--</a>&nbsp;</P> <P>&nbsp;</P> <P>LOS is Loss Of Signal, which typically means a failure in the optical fibre circuit somewhere outside the subscription address.</P> Sat, 15 Mar 2025 19:07:41 GMT https://helpforum.sky.com/t5/Broadband/Ont-problem/m-p/4937886#M473844 TimmyBGood 2025-03-15T19:07:41Z https://helpforum.sky.com/t5/Broadband/Ont-problem/m-p/4937904#M473847 <P>Thank you! We've had workmen rough casting outside so it seems to have been them to have caused the problem</P> Sat, 15 Mar 2025 19:31:05 GMT https://helpforum.sky.com/t5/Broadband/Ont-problem/m-p/4937904#M473847 Melanie-- 2025-03-15T19:31:05Z