Re: Vulcan Upgrade Info

["Mark Cummings" <NOTfigjams@primus.com.au>]

thanks Paul,

got the image.

I have checked out the PSU, and so far not found much faulty, except it
blows 10A fuses, which is pretty spectacular.  I think a Variac may be
needed for mine. A circuit would be handy too, I hate working on stuff
without a clue what I'm looking at. The job is on Ice, since the WD 40M
drive went south last year, or is that north from down under :)
I was running it off a PC supply for most of my testing. Wires hanging out
everywhere, but it worked.
With that new code, I hope to get back into fixing it again. One of the
drives I have is a Conner 40M which matches a model that was used in the
Vulcan originally. And it's not a stepper like the WD drive. Although I must
say the WD had a very nice wine and squeeking stepping sound. Very unique,
and a characteristic missing on voice coil drives of today. I will miss
that.

Mark


"Paul Grammens" <grammens@svn.net> wrote in message
3ced2043@news.svn.net">news:3ced2043@news.svn.net...
>
> "Mark Cummings" <NOTfigjams@primus.com.au> wrote in message
> 3cecc9e8_1@news.iprimus.com.au">news:3cecc9e8_1@news.iprimus.com.au...
> > thanks for that explanation Bart. Now I know which one I have (although
> > broken HDD and PSU).
>
> I recently bought a Vulcan with a defective PSU and repaired it. I'm an
> electronic tech by trade.
> The problem was originally a poor solder joint in part of the AC input
> section. Arcing there blew a diode and transistor farther in. You may be
> able to fix yours by looking for poor solder joints. I found a lot of them
> besides the one causing the problem, which I found by seeing the brief arc
> when I turned on the power.
>
> > Mine is/was the 40 meg version of the PSU+card, but I do have the Vulcan
> > Gold 3.5" disk too. My PSU case is black.
> >
> > I am also interested in that ROM code Paul, any chance ?
> It's in the mail.
> -Paul
>
>