Poor contact repair (was: Re: The pure *hell* of restoring a PDP-8/S desktop.

From: Daniel T. Burrows <dburrows_at_netpath.net>
Date: Wed Feb 9 13:51:57 2000

>Yes, I forgot to warn people. The oils in silicone grease
>do evaporate slowly over time but there is almost nothing
>that will fully remove it. I have had reasonable results
>using Brake Clean but you have to be careful
>with this also. It dissolves many plastics and most paints.
>It is highly toxic and should be used in ventilated
>areas only.
> Don't get the grease on anything you don't want it on.
>A little of the stuff goes a long way.
>Dwight

Another warning. Be very careful using chlorinated solvents near
electrolytic caps. One of the labs I used to service did some studies on
why one of their customers was having a high failure rate with the ends
popping. They found the solvent they were using for flux removal was the
cause. It broke down the seal at the vent hole. The caps were never in
direct contact with the solvent - just the vapors were enough.

Dan
Received on Wed Feb 09 2000 - 13:51:57 GMT