unibus backplane list?
jwest at classiccmp.org
Mon Aug 15 18:31:50 CDT 2005
>>>>> 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
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
>>>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.
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