On 19/01/2017 15:47, "Tony Duell" <ard.p850...@gmail.com> wrote:
> On Wed, Jan 18, 2017 at 11:42 PM, Adrian Graham > <binarydinosa...@gmail.com> wrote: >> On 18 January 2017 at 20:13, Tony Duell <ard.p850...@gmail.com> wrote: >> >>> >>> Just to keep you updated, I have located one of my units that contains said >>> drive. I am rather busy at the moment with more mundane things, but I will >>> try to pull it apart and identify said capacitors. >> >> >> Thanks Tony :) > > I did have a little time today so I've taken it apart and taken some photos. I > will try to upload those next time I am in the library... > > If the capacitors are the ones I think they are, the larger one nearer the > edge of the board is 47uF at 25V, the other is 10uF at 25V. They seem > to be power supply decoupling (the former is between the +12V rail and > ground, the latter is fed from a low value resistor from the +12V rail and > also goes to the +ve power pin of an LM324 op-amp). That means they > are not critical. But if they have been electrically damaged, it suggest > severe overvoltage on the 12V line which could have damaged other > parts. Brilliant, thanks! Nice to see what a clean unit looks like too, mine looks like it's been in the wars. I'm back from a little break to see my Missus so I'll clean up the board and see how bad the damage/rot is. Cheers, -- Adrian/Witchy Binary Dinosaurs creator/curator Www.binarydinosaurs.co.uk - the UK's biggest private home computer collection?