Date   : Sun, 16 May 2004 15:56:19 +1200
From   : Michael Foot <mjfoot@...>
Subject: Re: BBC B PSU part

In message <002401c43a47$ea5d0430$0100a8c0@...>
          "Bob Devries" <bdevries@...> wrote:

> yes, those are the ones you want.
> 
> > There is also a Jaycar (http://www.jaycar.co.nz) store close by that does
> appear to have this type of capacitor. I'm still confused over which one to
> get.
> > I'll also replace C2 (0.1 uF @ X) while I'm at it. Jaycar have the
> following which look close.
> >
> > RG5250 0.01uF Mains 250VAC Metallised Polypropylene Capacitor
> > RG5254 0.1uF Mains 250VAC Metallised Polypropylene Capacitor
> >
> > RG5230 250V AC Mains - Metallised Polypropylene Capacitors - X2 10nF
> > RG5236 250V AC Mains - Metallised Polypropylene Capacitors - X2 100N
> >
> > Would any of these do the trick?

I picked some up today and they have fixed the problem. Thanks to everyone
who replied.

The repaired machine is kind of interesting as I've not seen one exactly 
like it before. I'm thinking that it might be a Model A that has been upgraded 
to a B. It has the older style case with no top piece at the back where 
the PSU goes, it doesn't have the center piece where the vent is and there 
are no raised bits to hold the keyboard in place. Underneath the PSU is 
a metal grill. Most of the ICs are socked, even some on the memory chips 
(IC61-IC68). The keyboard has a socket fitted in the ashtray (28 pins) and
there is a pin header soldered on the back of the keyboard but there are
no speech chips installed. It has an Issue 4 board and was manufactured on
15 Nov 1982.

Can anyone tell me more about this machine?

Thanks,

Mike.

-- 
Michael Foot <mjfoot(at)paradise(dot)net(dot)nz> *
http://homepages.paradise.net.nz/mjfoot/
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