First I'd like to say that I am new here and reading the threads I have found in the last several days have been extremely helpful. I've been using Markrvp's restoration as a bit of a guide to restore a Donkey Kong machine I acquired several years ago that had been converted into a jamma cabinet. Since the jamma harness and the pcb were already wired up it seemed as though I only needed the jamma to nintendo adapter so I purchased that and quickly installed it. When hooking the board up now I only get a mario jumping noise that quietly loops in the background and the screen stays blank. I thought this could possibly be the monitor but I tested another jamma board that I have and it worked fine. My guess is that the pcb isn't giving the appropriate voltage to the board/monitor but since I am very new to the restoring game I really have no idea how to approach this situation. Thanks!