Looking for some help here. We bought a Gottlieb Stargate pinball machine last year. It worked well for a while but now it is completely unplayable. We get a pulsing noise from it and the display looks like it is Chinese and nothing else works on it. I have had most of the boards and the power supply redone and still nothing. Any help would be greatly appreciated as we love this game. We have also had a couple of different companies come and look at it but no luck.