Powering up a 20-year old MicroVAX II

[Gordon JC Pearce]

Rod Smallwood wrote:
> Hi
>    Sounds like capacitors. 
> Alhough it's a switcher any high voltage/high value capacitors in the
> PSU might well need reforming.
> Quite often you will see caps with a pair if incised lines on top. This
> makes them go pop instead of bang.
> You would not want to see a PSU where they have gone bang.

This is the only popped electrolytic I have ever seen, in damn near 30 
years of fiddling with electronic stuff:

http://www.gjcp.net/~gordonjcp/blowncap.jpg

Gordon