2nd tap isnt working

My 2nd tap just stopped working. I have two mini kegbot boards i bought from kegbot awhile back. I know both boards are working, lights all work. I think the cat5 maybe the reason its not working, anyway to test it/trouble shoot it?

Odd mine 2nd stopped working this week also. Have not had time to troubleshoot. Was added a couple weeks ago and all connections soldered.

We both have bad luck! Any ideas what I should trouble shoot?

Nope mine is still down and due to a neck injury have not checked hardware but it should not have changed being soldered in just recently. UGH