Re: Vulcan PS Replacement

[Steven Hirsch <snhirsch@gmail.com>]

Steven Hirsch 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.

Following up on my own post:

Bill Garber found this power supply model for considerably less money at

http://www.trcelectronics.com/Meanwell/pt-65b.shtml

$21.31 USD!

(Thanks, Bill)