From: "Jay West" <jwest at
classiccmp.org>
Glen wrote...
Thanks Jay. I had given up trying to find the
right connectors new.
Mouser lists part 1-640511-0 as No Stock, but Digi-Key lists them in
stock $1.11
I think for most typical resistors you'd put in the housing, the
appropriate pin is the one for 24awg. I already have a few spare connectors
that were cut from cables, so I plan to just get new pins for those. I'll
crimp the new pins on a resistor, pull all the old pins & wires and I
should be good to go. If I need more then I'll buy a few of the housings
too.
There is one possible discrepancy I just noticed on the old vs. new
connectors. On the locking tabs the old style connector has a small
rectangular hole to allow the mating connector tab to lock in. On the new
connector locking tabs there is instead a hook formed on the end with no
hole. Visually it appears that the new connector would work with the old
style socket as far as the lock tabs go, but I can't be completely certain.
Worst case the locking function may not work, we'll see.
If working with an old connector, the pins are fairly difficult to get out.
There is a tool to do it, AMP part 455822-2. Mouser lists it as $22 but
cms-tools.com lists it at $14. On most RS232 pins you can push them out the
back with needlenose pliers if you're careful instead of using a tool. That
approach doesn't work on the MR connectors, so may have to get the tool.
I'm experimenting with a RS232 pin tool to see if it will depress the MR
connector pin locks correctly.
Jay
Hi
Why not solder the resistor inside the computer, on the PC board.
I didn't do this on my machine but it wouldn't be that big an issue
if it was done. Just put some tape over the connector with a warning
note to anyone that wants to connect a real battery up.
I got a molex connector that had the right pin pattern but needed
some trimming of the plastic to fit. I got it at a local surplus shop
so don't have a number for it.
Dwight
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