If it finds an external fault it should enable you to book an engineer.
After the service checker completes and if it comes back green all good can you click on broadband to run an updated test please. If you get amber or red please follow the on screen instructions.
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If you're somewhere near the Hemel Hempstead area, this has been down since midnight. No expected time for service restoration as yet. Sky have quoted up to 2 days!
