I am in the process of trying to fix this old Allied Liesure pinball machine I have. It worked fine for years and then just up and quit. The lights light up but the main board apparently isn't happy. The board is showing an error that usually means a voltage issue according to the manual. I did a little reading and found out the thing runs on 5V DC. Somehow AC power is getting through. When I test the output from the power supply I get about 5.8V DC and 15V AC. I'm usually pretty good with this sort of stuff, but I just don't know enough about these old power supplies. I have another power supply for parts that is missing a handful of parts, but for the most part they are there, so I can steal stuff off of that if I need to. Any insight on where to start? Does anyone have any resources on these things?