Sky Q is usually code 3734.
Some SkyQ boxes will power on the a smart screen.
1) Best solution as of now is to leave the Sky Q on all the time. In Flipper, modify: press and hold ADD till solid, then 999. On off will only turn on and off the TV.
2) Look for a setting in Sky Q to turn this off. Give them a call - many people have complained about this;
3) Disconnect the wifi. This screen only comes on if the box is connected to wifi (our understanding);
4) Use Learning to copy the Exit signal into Flipper's Mute.
If following 1 above, make sure to turn off or extend as long as possible, any standby in Sky Q box.