Thank you for posting to the forums! From the guide that you are on in the screen shot you should be able to select a show and press watch now, that should "wake up" the cable box. What you could also try is pulling up the on screen remote under live TV then pressing the power for the cable box. If the remote is just not responding please let us know so we can help you with that.
Hope this helps!
The Sling Moderation Team - Leanne
Hi, I'm having a similar issue when trying to connect to Verizon Fios using a slingbox I haven't used in a couple years and have now moved to a new location. I can make the connection to my sling box and the channel guide and interface pop up, but on the screen is a "to watch TV hit the menu button" prompt - and when I open up the on screen remote (or try to click on "watch now"), nothing happens when I press any button. (I've also tried every possible remote). Any help?