Got Videotrax card working

[gordonjcp at gjcp.net]

> Ethan Dicks <ethan.dicks at gmail.com> wrote:
>
>> in the case of Qbus and Unibus boards, since the
>> fingers are gold, it has to be due to oxide build up on the backplane
>> pins.
>
> Aren't the backplane contacts also gold-plated?
>

Mine aren't.  I have seriously reduced the number of random freezes (hard
disk light stays on, little red light on the controller comes on) by
removing all the cards, cleaning the edge connectors with contact cleaner,
buffing the surface with a pencil rubber, and reseating.

Dissolves sticky brown smoke goo.  Seems that the previous owner of my PDP
was a fairly heavy smoker.

Gordon.