Been working on this Zaxxon for only a couple of days. Had some funky voltages coming from old analog power supply. Replaced old P/S with updated 12v/-5v/5v Happ P/S. Left old transformer to power monitor. After that, cleaned up the 2 boards, lots of grime and dust. Re-seated all socketed chips. So, now I have a picture ! big improvement over no picture at all. The game powers up and shows the home screen with the high scores ect. then after about 10 seconds the screen changes to show a life meter on the bottom and a couple other things. It looks as if the game wants to scroll through different screens in a demo or attract mode but it gets hung up on that second screen. Also, when I press the test switch, the game shows some jumbled lines and goes back to home screen, never goes into test mode. Has anyone seen this?
