Work through the following link https://www.sky.com/help/articles/sky-q-box-wont-turn-on If you have to order a new Q box this usually means a doorstep swap. Don’t forget to keep your viewing card from the failed box if you order a replacement. Also if the box you are replacing is a 2TB there are two versions of power supply. One has a standard C7 (figure of eight) power lead socket in the back of the Q box. The other has a separate power supply. Although this still has the C7 power lead into the power supply there is a multi pin Din power socket in the Q box for connecting the power supply. Make sure that the replacement box has the power supply included if the Q box has the orange coded multi pin din socket in the back of the Q box.
