@Brian002 if you mean the ONT by the term "Openreach box" and thst has no lights then check it isnt simply an issue with the mains supply. Assuming it isnt call Sky to report the failure so they can get the unit replaced.
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65inch Sky Glass, 3 Sky Streaming Pucks, Sky Ultrafast + and Sky SR213(white Wifi Max hub) main Wifi from 3 TP-Link Deco M4 units in access point mode
