I can definitely understand why you have contacted us in regards to your Blinking Network Light. Below I have provided a troubleshooting link, that will help resolve your issue.
Hope this Helps!
The Sling Moderation Team
Thank you for participating in the Slingbox Answers Forum. I have attached a link that I hope will be helpful in finding a resolution to your issue.
Hope this helps,
Sling Moderation Team