S/23 machine update card

[Jon Elson]

On 08/18/2019 06:38 PM, Dennis Boone via cctalk wrote:
> Folks,
>
> I've determined that the piece of my S/23 that's causing the power
> supply to blow its 12V fuse is the machine update card.  The manual says
> this provides additional R/W storage for microprogram updates.  That
> sounds like something that wouldn't be necessary for normal operation.
>
>
Not knowing anything about this system, but you might check the card for 
a bad Tantalum capacitor.

Jon