Tools really handy if Shopping Pins

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Archived from groups: rec.games.pinball (More info?)

Hi all,

Just go a set of IDC Punchdown Tools (.100 & .156) today and these are
really handy if shopping Pins.

I had a few IDC Connectors fall off during the removal and
reinstallation of my Machines Wiring Harnesses and used a Screwdriver to put
the Wires back in temporarily, it wasn't nice to say the least so I sourced
these Punch Down Tools and they worked great.

I also repunched all the IDC Connectors in my Machine and it tool about
20min to do and nearly all of them were loose.

Just thought I would pass this on as they have helped me out big time.

Kevin
 
Archived from groups: rec.games.pinball (More info?)

Where did you get the punch down tools? Link?

Thanks,

Mattax
 
Archived from groups: rec.games.pinball (More info?)

As Korn and Cody said, IDC was good for fast assembly line production.
These games had a "life" of 5 years, and IDC connectors fit into that
time frame for the most part. But if you really want to fix it, so it
stays fixed, crimped terminal pins are the way to go. Though I do
admit I own the IDC push tool, but I only use it when I need to test
an idea to determine a problem/solution. Then I go back and do it right
with crimped terminal pins (trifurcon in .156" situations). More
info on this subject is available at
http://marvin3m.com/connect

TheKorn wrote:
> "Sojourner353" <sojourner@dodo.com.au> wrote in
> news:42c8f0e7$1@news.comindico.com.au:
>
> > Just go a set of IDC Punchdown Tools (.100 & .156) today and these
> > are
> > really handy if shopping Pins.
> >
> > I had a few IDC Connectors fall off during the removal and
> > reinstallation of my Machines Wiring Harnesses and used a Screwdriver
> > to put the Wires back in temporarily, it wasn't nice to say the least
> > so I sourced these Punch Down Tools and they worked great.
> >
> > I also repunched all the IDC Connectors in my Machine and it tool
> > about
> > 20min to do and nearly all of them were loose.
> >
> > Just thought I would pass this on as they have helped me out big
> > time.
>
> "You'll be back". IDC is junk, IMHO. If I'm taking the time to do it, I
> figure I might as well fix it so that it doesn't have to get fixed again.
> (i.e. crimp style connectors)
 
Archived from groups: rec.games.pinball (More info?)

I got them from Mouser and they are made by Molex.

.100 is at
http://www.mouser.com/index.cfm?handler=displayproduct&lstdispproductid=382405&e_categoryid=119&e_pcodeid=53805

.156 is at
http://www.mouser.com/index.cfm?handler=displayproduct&lstdispproductid=341346&e_categoryid=119&e_pcodeid=53805

Kevin


"Demolition Man" <tk487@tk487.com> wrote in message
news:1120465952.205638.9480@g47g2000cwa.googlegroups.com...
> Where did you get the punch down tools? Link?
>
> Thanks,
>
> Mattax
>
 
Archived from groups: rec.games.pinball (More info?)

IDT is a fine connection method. The problem in these games is not the
use of IDT, but the current carried by the pins. With a rated current
of 5A, the connectors are allowed to rise 85F above the environment.
Put that connector in a warm backbox in a hot room, and pretty soon
those pins are running at a couple of hundred degrees. It's the
capacitor and diode problem again, the thermal design derating wasn't
right. I used to see this a lot in the 1980s.

Pushing the wire back into the IDT hole on a failed connector isn't
going to work.The whole connector has to be replaced. Also, if there's
heat damage on the pins, the header should be replaced as well.

Do that, using the 7A rated parts instead of the 5A ones, and it
doens't matter whether you use IDT or crimp. Reliability will improve.

Run it long in a hot room, and it alos won't matter if y ou use IDC or
crimp - it will fail again.

Bottom line: it isn't IDT or crimp, it is the pin-to-pin contact itself
that fails.

If WIlliams had used crimp, we would all be looking at replacing them
with the "more reliable" IDT connections.
 
Archived from groups: rec.games.pinball (More info?)

"Sojourner353" <sojourner@dodo.com.au> wrote in
news:42c8f0e7$1@news.comindico.com.au:

> Just go a set of IDC Punchdown Tools (.100 & .156) today and these
> are
> really handy if shopping Pins.
>
> I had a few IDC Connectors fall off during the removal and
> reinstallation of my Machines Wiring Harnesses and used a Screwdriver
> to put the Wires back in temporarily, it wasn't nice to say the least
> so I sourced these Punch Down Tools and they worked great.
>
> I also repunched all the IDC Connectors in my Machine and it tool
> about
> 20min to do and nearly all of them were loose.
>
> Just thought I would pass this on as they have helped me out big
> time.

"You'll be back". IDC is junk, IMHO. If I'm taking the time to do it, I
figure I might as well fix it so that it doesn't have to get fixed again.
(i.e. crimp style connectors)
 
Archived from groups: rec.games.pinball (More info?)

I agree. Stranded wire in IDC connectors is a setup for failure. Great for
cheap assembly, but terrible for service down the road.

"TheKorn" <TheKorn@TheKorn.Net> wrote in message
news:Xns96895D8B62DAAqqwwaass@207.115.63.158...
> "Sojourner353" <sojourner@dodo.com.au> wrote in
> news:42c8f0e7$1@news.comindico.com.au:
>
> > Just go a set of IDC Punchdown Tools (.100 & .156) today and these
> > are
> > really handy if shopping Pins.
> >
> > I had a few IDC Connectors fall off during the removal and
> > reinstallation of my Machines Wiring Harnesses and used a Screwdriver
> > to put the Wires back in temporarily, it wasn't nice to say the least
> > so I sourced these Punch Down Tools and they worked great.
> >
> > I also repunched all the IDC Connectors in my Machine and it tool
> > about
> > 20min to do and nearly all of them were loose.
> >
> > Just thought I would pass this on as they have helped me out big
> > time.
>
> "You'll be back". IDC is junk, IMHO. If I'm taking the time to do it, I
> figure I might as well fix it so that it doesn't have to get fixed again.
> (i.e. crimp style connectors)
>
 
Archived from groups: rec.games.pinball (More info?)

I believe in the crimp plugs also and have put many in the machines
where they seem needed gi etc seems pointless to replace them all to me, if
it isn't broke don't fix it.

Kevin

<cfh@provide.net> wrote in message
news:1120493714.259896.312220@g14g2000cwa.googlegroups.com...
> As Korn and Cody said, IDC was good for fast assembly line production.
> These games had a "life" of 5 years, and IDC connectors fit into that
> time frame for the most part. But if you really want to fix it, so it
> stays fixed, crimped terminal pins are the way to go. Though I do
> admit I own the IDC push tool, but I only use it when I need to test
> an idea to determine a problem/solution. Then I go back and do it right
> with crimped terminal pins (trifurcon in .156" situations). More
> info on this subject is available at
> http://marvin3m.com/connect
>
> TheKorn wrote:
>> "Sojourner353" <sojourner@dodo.com.au> wrote in
>> news:42c8f0e7$1@news.comindico.com.au:
>>
>> > Just go a set of IDC Punchdown Tools (.100 & .156) today and these
>> > are
>> > really handy if shopping Pins.
>> >
>> > I had a few IDC Connectors fall off during the removal and
>> > reinstallation of my Machines Wiring Harnesses and used a Screwdriver
>> > to put the Wires back in temporarily, it wasn't nice to say the least
>> > so I sourced these Punch Down Tools and they worked great.
>> >
>> > I also repunched all the IDC Connectors in my Machine and it tool
>> > about
>> > 20min to do and nearly all of them were loose.
>> >
>> > Just thought I would pass this on as they have helped me out big
>> > time.
>>
>> "You'll be back". IDC is junk, IMHO. If I'm taking the time to do it, I
>> figure I might as well fix it so that it doesn't have to get fixed again.
>> (i.e. crimp style connectors)
>
 
Archived from groups: rec.games.pinball (More info?)

"martin" <martin.reynolds@gmail.com> wrote in
news:1120496279.909845.121160@g44g2000cwa.googlegroups.com:

> IDT is a fine connection method. The problem in these games is not the
> use of IDT, but the current carried by the pins. With a rated current
> of 5A, the connectors are allowed to rise 85F above the environment.
> Put that connector in a warm backbox in a hot room, and pretty soon
> those pins are running at a couple of hundred degrees. It's the
> capacitor and diode problem again, the thermal design derating wasn't
> right. I used to see this a lot in the 1980s.
>
> Pushing the wire back into the IDT hole on a failed connector isn't
> going to work.The whole connector has to be replaced. Also, if there's
> heat damage on the pins, the header should be replaced as well.

There's a second angle on this issue... How many times have you (and
we've ALL been guilty of this at some point!) had to grab by the wires
and pull a connector off? Or worse yet, on older machines (sys 7
vintage) that have those f'd up ridges on the back where you CAN'T grab
the housing and _have_ to pull by the wire. IDC is a nightmare there!

The other thing is that I don't believe that IDC was ever intended for a
vibration-prone environment like pinballs. It works fine in vibration-
free environments (such as telecom punchdowns), but all that vibration
going along the wires would tend to loosen them up IMHO.

You're more than welcome to all the IDC in the world. I'll take crimp on
pins that I can swing the pin around my head on, thank you! :)

> Bottom line: it isn't IDT or crimp, it is the pin-to-pin contact itself
> that fails.

Unless it's the pin to wire contact that fails, like does so often.
 
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