So... This was an easy fix. I read on other boards that old arcades sometimes stop working due to corrosion. So I unhooked every molex connector I could find and cleaned the contacts. There is actually two boards here, they are sandwiched together. Contacts are on the upper right side: Dip switches and year of board. Pretty cool: Hooked everything back together. There's a red LED on! I've got video for the first time! But what's this? Looks like a test screen, I can cycle through the various sound effects. I later found a switch inside the coin door to exit this mode. And it relives!! Woohoo!! Now onto a new thread - the MAME arcade cabinet build log!