@TMH2020 What do you mean by going off, the sky Hub has no connection on all devices, see the link below if it helps!
This link below provides information about the coloured lights on the various hubs that can help to see what is going on! If the system is also Full Fibre then the lights on the OR/CF ONT also require to be looked at!
https://www.sky.com/help/articles/hub-lights-explained-start
