5 Feb
2015
5 Feb
'15
1:57 p.m.
Indeed, thank you; I don't follow it closely and I probably would have been
caught short when stocks ran down. Guess it's time to go and pick up a case
or two down at the home store... I needed to make a light bulb run anyway,
LOL.
Best,
Sean
On Thu, Feb 5, 2015 at 4:45 PM, Jacob Ritorto <jacob.ritorto at gmail.com>
wrote:
excellent information - thanks!
On Thu, Feb 5, 2015 at 4:38 PM, Tothwolf <tothwolf at concentric.net> wrote:
Never use silicone (dielectric) grease anywhere near this sort of stuff.
Western Electric / AT&T learned the hard way back in the day when the stuff
On Wed, 4 Feb 2015, Jacob Ritorto wrote:
> On Wed, Feb 4, 2015 at 10:00 PM, Jon Elson <elson at pico-systems.com>
> wrote:
>
>>
>> The 11/45 has a row of little step-down regulator modules, all plugged
>> in with those horrible AMP Mate-n-Lock connectors. We often had bad
>> contacts on those and they would sometimes burn the connector housings
or
>> char the ends of the wires. That was all
about 1980, I can't imagine
>> they've improved with age. I think you may have more trouble with
these
than anything else in the machine.
I wonder if spraying out with crc contact cleaner and a nice slathering
of dielectric grease would help.
damaged switch and relay contacts in their
telephone switches. On the
other
hand, something like Sanchem A-Special would be
fine, although a little
messy. (And before someone asks, no, A-Special is not anything at all
like
that nasty "Noalox" zinc particle
garbage from Ideal Industries...totally
different product families and applications.)
The main issue with AMP Mate-n-lock connectors (and similar pin and
socket
connectors from Molex) is the use of tin plated
spring brass contacts
instead of tin plated beryllium copper contacts. Spring brass contacts
are
not rated for very much current compared to
beryllium copper contacts,
but
manufacturers tend to buy whatever is cheapest.
I've successfully used
both
types of contacts for years without issues and
haven't (yet) had the
catastrophic failures some people have described. If I use these type of
connectors for power though, I use beryllium copper contacts.