It seems that you are having some issues with your Slingbox PRO-HD since it shows some blinking lights and then shuts off.
This issue might be related to a faulty power adapter. With this in mind, I encourage you to give us a call as soon as possible. We will be more than willing to assist you in order to fix this issue.
Just make sure to use the tools on the right-hand side of the screen.
Hope this helps!
I have a several Slingbox Pro-HD and Slongbox Solo and 6 of them started to have the same situation.
Network Light and U shape light in front of Slingbox Pro-HD started to kept blinking.
This is very rare to have the several machine started to have the same issue at the same time.
I just chatted with support and I was told that since those are in Japan, they will not help.
But the comment from Sling Media above sounds like they know this is caused by power adapter.