Re: Vulcan PS Replacement

[swtownsend@hotmail.com]

    On the other hand, I have a couple of spare Vulcan Hard Drives
that are in good working order.  Would be glad to sell them for less
than the cost of the new power supply and none of the hassle of the
rebuild.
    Does $25 and shipping sound reasonable?

      Steve
      swtownsend(at)hotmail.com



On Aug 1, 7:35 am, Steven Hirsch <snhir...@gmail.com> wrote:
> FYI:
>
> The power supply in my recently-acquired Vulcan GS was serious toast.  Many
> burned-through "flameproof" resistors and at least one of the more expensive
> switching transistors reads as a single circuit node :-).  Capacitors are not
> going to do the trick here, I'm afraid.  (The seller had told me it was not
> working - sometimes you get lucky and sometimes not...)
>
> In case anyone else is looking to rehabilitate one of these, I found a
> switching power supply that will fit the case:
>
> Mean Well PT-65B
>
> Available from Mouser, Jameco and others for ~USD $33.00.  It's a 65W unit
> with +5, +12 and -12 output.  I plan to mount a 7905T regulator (-5V TO-220
> package) on the inside of the case to derive the -5V line.
>
> If I have measured correctly, this is slightly narrower than the original unit
> and has the same length and height.  If worse comes to worse, I may have to
> remove the fuse holder and replace with an internal in-line fuse.
>
> Was able to grab a refurbished and guaranteed Conner CP-3104 from DCP Computer
> Products, so I'm on my way to a working Vulcan 100MB unit.