-----Original Message-----
From: Dwight Elvey <elvey_at_hal.com>
To: classiccmp_at_classiccmp.org <classiccmp_at_classiccmp.org>
Date: Monday, February 07, 2000 10:29 PM
Subject: Re[2]: The pure *hell* of restoring a PDP-8/S desktop.
>Edward Taussig <taussig_at_arpanet.com> wrote:
>> Hi. Stabilant 22 was touted highly by Jerry Pournelle in Byte magazine
>> as a contact enhancer, it might help after a good de-gunking.
>> http://www.stabilant.com/
>>
>> http://www.byte.com/art/9705/sec13/art1.htm
>> "Stabilant 22, the miracle all-purpose contact enhancer. It not only
makes
>> for better electrical contacts -- a major use of Stabilant 22 is to get
all
>> the electrical noise out of hi-fi systems -- but also lubricates
connector
>> insertions. If you don't use Stabilant 22, I bet you wish you did."
>>
>
>Hi
> Why use someone's resold product when you can just
>buy some silicone grease like DC4 and it works fine.
>DC4 will last longer because it contain a binder.
>As for degreasing, I would suspect that something like
>brake clean would be better on electronics. Gunk engine
>cleaner has corrosives and is hygroscopic. I don't think
>I want that in my machine. It would surely cause
>long term problems.
I have been using engine gunk in minis for many years and have never had any
come back. I am dealing with dirt/crud so thick that you couldn't get it off
with just scrubbing. After the engine gunk I vacuum out the backplane, then
use contact cleaner. I have never had a problem or a bad contact after that.
This should only be used in minis where regulart contact cleaner fails. I
have rarely had to use it because most minis come out of labs and are very
clean. This mini has been sitting in a warehouse, unprotected for at least
25 years. The dirt was so thick on the negibus cables that I had to soak
them in a tub for 4 hours and scrap the dirt off in layers. Looks like a
millions $$ now but was disgusting to even handle before. Amazing how much
dust and garbage something can accumulate over 20+ years.
(it's been running 10 hours now without problems :-) )
john
PDP-8 and other rare mini computers
http://www.pdp8.com
>IMHO
>Dwight
>
>
Received on Mon Feb 07 2000 - 21:20:04 GMT