I am working on an AppleII + power Suply that is universal. And I don't have -12v. I replaced all the electrolytic Caps in the secondary section with no joy. Hs anybody worked on this problem in the past. I have a schematic, not sure if it is the right schematic butit is for Aztec and it is euro. It says IIe so it is a more modern design than mine as I don't have Riffa caps in there.