15 Aug
2005
15 Aug
'05
4:31 p.m.
Someone wrote....
>>>> My 11/44 has a DD11-DF in it which is
impossible to get cards into and
>>>> out of. It's like something is physcally wrong with it. Rather
than
>>>> damage any cards I thought I'd replace it.
That's not
totally uncommon, many of my DEC machines exhibit this even after
much care in the backplane restoration. Non-Hex Unibus cards also seem to
rock back and forth slightly in the slots, something I think is not good
design.
Someone else wrote...
>> I've had similar trouble with the HP
1000 boards.
Now that's unusual, at least to me. There's been quite a large
number of HP
1000's make it in and out of my place. I can only think of one or two that
had problems like this and the problem was normally 3rd party cards.
I found that if I
>>clean the edge connectors and them wipe them with a rag slightly dampened
>>with WD-40 (mostly kerosene, a light oil) that the cards go in and out
>>much
>>easier and I have a lot less intermitant contacts. I believe the oil
>>coating also helps reduce oxidation of the contacts.
Ugg... I wouldn't
suggest WD-40. It's not helpful to some other things
commonly on circuit cards.
Please please please buy a can of Caig Pro-Gold for use on gold edge cards
and directly on gold pin backplanes. I promise you'll be extremely happy
with the results which are both instantaneous, extremely effective, and last
a long long time.
Jay West