On 24/10/2016 00:30, "Jules Richardson" <jules.richardso...@gmail.com> wrote:
> On 10/23/2016 08:02 AM, Adrian Graham wrote: >> 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. > > Low output in-circuit? If not, are you using a large enough dummy load > (probably just necessary on whichever output rail is deemed to be the main > one)? > > Without enough load the regulation on switchers often doesn't work, and low > outputs are a typical result... Yep, and I hear this all the time about Apple ][s, but the PSUs from the last few machines I've done have worked without a load, and these PSUs also normally work without load also. Maybe it's a US/UK thing. I'm learning as I go on.... -- Adrian/Witchy Binary Dinosaurs creator/curator Www.binarydinosaurs.co.uk - the UK's biggest private home computer collection?