* On Wed, Jun 22, 2016 at 09:42:25AM -0700, Ian Finder <ian.finder at gmail.com>
wrote:
Well, screen rot. Why didn't you say so in the
first place!
The nasty substance that you came into contact with is almost certainly the
decomposed RTV silicone leaking out.
Gross stuff.
Seconded and thirded. This is exactly what the problem is.
One of my ADM-3a terminals had an identical issue with the broken down
adhesive between the CRT and the implosion protection screen. It
leaked down onto the motherboard and it was only cured by fixing the
screen rot.
If I remember correctly, I used both isopropyl alcohol and Goo Gone
(citrus adhesive remover) to clean up the spilled gunk.
-Seth