Hi folks, Now that the bouncing has calmed down I've got a question about this here triple output pretty ubiquitous power supply. This one had some burst caps so naturally wasn't working and was probably why the machine it came out of was taken out of use.
I've replaced all of them because why not, along with the .1uF mains filtering cap that would also burst at some point and I still get low output on all rails. I've tested all the major components out of circuit and checked for shorts; in Apple ][ power supplies (also Astec, apart from the ones that aren't) low output is mostly caused by a feedback capacitor (C7) going out of spec, but these are all new and as close a match to the originals I could find. One thing I've not done is reflowed all connections so I'll do that later, but has anyone got experience of common failure modes with these things? Cheers -- Adrian/Witchy Binary Dinosaurs creator/curator Www.binarydinosaurs.co.uk - the UK's biggest private home computer collection?
