I have a Slingbox 500 hooked up between a Samsung DCB-H380R cablebox and my tv with component and HDMI cables (component is default). I can watch everything normally on my tv and my cablebox works too, but when I want to use the slingbox website, I get a No Video Signal error. It's also the same error I see in the select input menu. HDCP shouldn't be a problem here because I don't use the HDMI input but the component input. I'm using the WiFi option instead of ethernet cables and my upload speed is about 3Mb/s.
What can I do to fix it?
This may not be an issue with HDCP, but could be a SOC issue. SOC is Selectable Output Control, and when the HDMI cable is plugged in will disable all other outputs connected to the cable box. Does it work when you disconnect the HDMI cable?
This article will further explain SOC:
Hope this helps!
Sling Media Moderation Team