@AJ2550 if the puck will not outputting even an blue error screen and it is not an issue with the mains power or selection of the correct TV input then the unit is faulty and needs replacing so give Sky a call.
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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
