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Author Topic: IBM Model M cord damage question, see picture  (Read 1910 times)

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Offline Choker

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IBM Model M cord damage question, see picture
« on: Sun, 18 January 2015, 23:49:25 »
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I'm considering buying a Model M on eBay. The one I want has this damage on the cord, but otherwise works fine. I want it because it has the "dental floss mod" done.

The seller claims that "there are three layers on the cable: the outside rubber housing, then a metal shield, then the wire. The outside housing is now pulled away from the end connector but the rest is intact completely and there is absolutely no perceivable damage to the actual cable OR the metal shielding. The keyboard works no different and I've never had any issues with keystrokes."

Note this is later model with the non-detachable cord.

I've never had a Model M before so I've no idea whether it's true. Can I trust him? Is there really a metal shield in between the rubber and the wire? What if the "metal shield" is in fact the wire itself?

Thanks very much!!
« Last Edit: Sun, 18 January 2015, 23:51:06 by Choker »
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Offline arakula

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Re: IBM Model M cord damage question, see picture
« Reply #1 on: Mon, 19 January 2015, 01:16:26 »
Yes there is a metal shield; it is wired to the metal back plate on the keyboard side and to the metal ring on the PS/2 connector on the other side.
And I've got a cable in a condition much worse than that (seems the plastic deteriorates over time) which still works nicely:
87817-0
A bit of heat-shrink tube or insulating tape should conceal the problem. Preferably both, to add a bit of stability.
« Last Edit: Mon, 19 January 2015, 01:27:13 by arakula »
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Offline 1391406

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Re: IBM Model M cord damage question, see picture
« Reply #2 on: Mon, 19 January 2015, 07:49:55 »
Model M's are fairly cheap these days. Have you considered buying one with an undamaged cable and floss modding it yourself? It's a pretty simple and straight forward mod.
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Offline fohat.digs

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Re: IBM Model M cord damage question, see picture
« Reply #3 on: Mon, 19 January 2015, 08:18:26 »
Ezrahilyer is selling off his extra cables in the classifieds.

Orihalcon's cables are pricey but really clean and efficient.
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Offline Snowdog993

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Re: IBM Model M cord damage question, see picture
« Reply #4 on: Mon, 19 January 2015, 08:41:04 »
Quote from: Choker on Sun, 18 January 2015, 23:49:25
(Attachment Link)
I'm considering buying a Model M on eBay. The one I want has this damage on the cord, but otherwise works fine. I want it because it has the "dental floss mod" done.

The seller claims that "there are three layers on the cable: the outside rubber housing, then a metal shield, then the wire. The outside housing is now pulled away from the end connector but the rest is intact completely and there is absolutely no perceivable damage to the actual cable OR the metal shielding. The keyboard works no different and I've never had any issues with keystrokes."

Note this is later model with the non-detachable cord.

I've never had a Model M before so I've no idea whether it's true. Can I trust him? Is there really a metal shield in between the rubber and the wire? What if the "metal shield" is in fact the wire itself?

Thanks very much!!

Did the seller tell you the exact model of that keyboard?  It could be one of several that have the cord built in.  My guess is that it could be the 42H1292, but it could be a 52G keyboard too.  The connectors to the controllers are different.  Rowdy did rewire a new cable to his and had to change a couple things.  If you wanted to replace the cable, I don't see a problem, just be sure that the connections are correct.
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Offline 0100010

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Re: IBM Model M cord damage question, see picture
« Reply #5 on: Mon, 19 January 2015, 08:44:39 »
Will work fine as is, or you can order a replacement cord from Unicomp - I think they are $10 or $15.
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Offline Snowdog993

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Re: IBM Model M cord damage question, see picture
« Reply #6 on: Mon, 19 January 2015, 08:49:17 »
Quote from: 0100010 on Mon, 19 January 2015, 08:44:39
Will work fine as is, or you can order a replacement cord from Unicomp - I think they are $10 or $15.

Why pay anything when you can take an old PS/2 connector off an old keyboard and do it for free?  All he has to do is wire up the replacement cord to the controller.  A few minutes of work.  Well worth it.
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Offline rowdy

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Re: IBM Model M cord damage question, see picture
« Reply #7 on: Wed, 21 January 2015, 03:42:22 »
I ended up making a replacement cable for one of my Model M out of a cable removed from an old membrane PS/2 keyboard.

Works well!
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