How do I know if my S4 video port on my motherboard is working?

[Eric Stiffler]

I still don't have the answer, but my phone works now. I'd like to direct you to my question before I became a member. http://forums.androidcentral.com/ask-question/493539-how-do-i-know-if-my-s4-video-port-my-motherboard-working.html#post4238158