topic Re: Red light on box in Broadband

Red light on box

Jade331 — Fri, 04 Jul 2025 11:03:02 GMT

I have contacted sky 4 times now about my internet not working I have had 2 appointments booked and no seen anybody come out but apparently they have been completed but my internet still does not work !

Re: Red light on box

Highlinder — Fri, 04 Jul 2025 11:16:41 GMT

@Jade331 Where is this red light on the router or if you have ultrafast broadband on the ONT?

Re: Red light on box

Jade331 — Fri, 04 Jul 2025 11:20:11 GMT

The ONT box on the wall

Re: Red light on box

Highlinder — Fri, 04 Jul 2025 11:21:29 GMT

@Jade331 You will need to call Sky back and report this as still not fixed. Have you tried to re-start the ONT since they said it was fixed?

Re: Red light on box

Jade331 — Fri, 04 Jul 2025 12:47:23 GMT

yes I have reset it so many times I have rang them again and again and again somebody is ment to be contacting me in next 72 hours but who knows

Re: Red light on box

Deb3000 — Fri, 04 Jul 2025 13:51:18 GMT

It would help if you were specific about which light is red and whether this is an Openreach or CityFibre ONT.

(ONT = Optical Network Terminal. The box attached to the wall).

Re: Red light on box

JimM1 — Fri, 04 Jul 2025 14:18:43 GMT

@Deb3000 Got to be the PON or the LOS, table for you grab it and keep it. Jim

ONT Lights

Re: Red light on box

Highlinder — Fri, 04 Jul 2025 14:20:09 GMT

@Deb3000 It don't matter what ONT it is. If there is a red light then there is an issue.

Re: Red light on box

Deb3000 — Fri, 04 Jul 2025 20:58:28 GMT

Yes, I already have that information, (and more). A red light is clearly an issue. Diagnosing what issue requires knowing which light is red!

Re: Red light on box

TimmyBGood — Sat, 05 Jul 2025 07:16:20 GMT

@Highlinder wrote:

It don't matter what ONT it is. If there is a red light then there is an issue.

The model can be significant though: where it's an elderly one with a Battery Backup Unit then there can be a scary red 'fault' light on the BBU itself while the internet connection is working entirely correctly.

The age of that unit is such that they are all going to start exhibiting this symptom because the AA rechargeable batteries inside are now worn out: this probably should have been taken into consideration when they were designed and deployed ; )

Re: Red light on box

Jade331 — Sat, 05 Jul 2025 08:24:01 GMT

It's a red light on the ONT box the broadband light that goes red

Re: Red light on box

JimM1 — Sat, 05 Jul 2025 09:47:09 GMT

@Jade331 There are 4 (four) lights on the ONT box and depending on which one you actually have supplied to you, Mine is the Nokia version so the lights from left to right go Power, LOS, PON, and finally LAN. The normal operation is Power is Green, LOS is out no light, PON is Green (Solid light) and LAN flashes as data is sent back and forth between it and the Sky Hub.

Knowing which light is RED helps to say what the potential problem is, on the picture that was supplied for you to see, then that model has a Battery Back Up unit installed, and the batteries in it are more than likely done, IT does not stop the unit from operating but if the mains power fails then the unit will switch off as NO batteries to keep it working!

Re: Red light on box

Jade331 — Sat, 05 Jul 2025 15:36:45 GMT

Re: Red light on box

JimM1 — Sat, 05 Jul 2025 15:53:57 GMT

@Jade331 What is your location for that ONT unit!