Question from Andy: Hello, I recently purchased a Mortal Kombat machine that was missing a power supply. I purchased a power supply watched your video (which was immensely helpful) and followed the manual to where to put the wires on. Everything booted up fine but none of the buttons work! The wiring seems to be fine but I am at a loss on what my next step is. If it is any help, my power supply is different from others. Instead of having two ground ports, I have one ground port and a port labeled “MTR.” I have no idea what that means. So I have two ground connections from my JAMMA harness but only one port. The manual shows another green wire connecting the second (missing) ground port and the FD port. Would it be wise to put both ground wires and the green wire used to connect the FD on the same port? Any insight would be greatly appreciated. Included in this email is a link to the Mortal Kombat arcade manual for clarification. Thank you for your time and I hope to hear from you soon. Andy

Manual: http://www.arcade-museum.com/manuals-videogames/M/Mortal_Kombat_1_1640025101_July_1992.pdf