https://helpforum.sky.com/t5/Broadband/PON-flashing/m-p/5265713#M563315 <P><a href="https://helpforum.sky.com/t5/user/viewprofilepage/user-id/4673701">@Jeff_Fid</a>&nbsp;</P> <P>As you are talking to other customers here you will either need to run a line test or phone Sky about this:</P> <P>&nbsp;</P> <P><A href="https://www.sky.com/help/articles/broadband-diagnostic-start" target="_blank">https://www.sky.com/help/articles/broadband-diagnostic-start</A></P> Thu, 30 Apr 2026 18:32:34 GMT caesarome 2026-04-30T18:32:34Z https://helpforum.sky.com/t5/Broadband/PON-flashing/m-p/5265673#M563311 The PON light is flashing on my ONT but there is no LOS light which indicates the issue is at your end. I have turned both ONT and Router off. This fixed the issue for a couple of hours but now it's happened again and rebooting doesn't work. Thu, 30 Apr 2026 17:53:26 GMT https://helpforum.sky.com/t5/Broadband/PON-flashing/m-p/5265673#M563311 Jeff_Fid 2026-04-30T17:53:26Z https://helpforum.sky.com/t5/Broadband/PON-flashing/m-p/5265713#M563315 <P><a href="https://helpforum.sky.com/t5/user/viewprofilepage/user-id/4673701">@Jeff_Fid</a>&nbsp;</P> <P>As you are talking to other customers here you will either need to run a line test or phone Sky about this:</P> <P>&nbsp;</P> <P><A href="https://www.sky.com/help/articles/broadband-diagnostic-start" target="_blank">https://www.sky.com/help/articles/broadband-diagnostic-start</A></P> Thu, 30 Apr 2026 18:32:34 GMT https://helpforum.sky.com/t5/Broadband/PON-flashing/m-p/5265713#M563315 caesarome 2026-04-30T18:32:34Z