[Coco] Socket connector from transformer to motherboard in coco 3

Mon May 8 13:16:29 EDT 2017

Yeah, I knew to do that based on other brands of socket and pin connectors I've worked with so luckily I also already have the crimping tool.

Thanks to all of you for the help.

With help from the group I was able to get a replacement power switch for this coco and now putting the connector back on the transformer leads will have it back in top shape. I am pretty happy since the computer was thrown in with a bundle as broken.

________________________________
From: Coco <coco-bounces at maltedmedia.com> on behalf of Dave Philipsen <dave at davebiz.com>
Sent: Monday, May 8, 2017 7:45:36 AM
To: CoCoList for Color Computer Enthusiasts
Subject: Re: [Coco] Socket connector from transformer to motherboard in coco 3

Also remember that you'll have to buy the pins that go in the female end
of the connector too.  I didn't research them but I'm sure they're easy
to find.

Dave

On 5/8/2017 8:46 AM, Salvador Garcia via Coco wrote:
> Yes, definitely go with Digi Key. More than once I've ordered from eBay and got a slightly different part.
>
> The eBay part that I referenced is different from those that Dave referenced. The eBay part is a KK 2139 series and those that Dave referenced are KK 5239 series. I was not able to locate any tangible documentation describing the differences between these two series, but suspect that it might be the manufacturing material. Given that 5239 is greater than 2139, I would also guess that that the latter series is newer.
>
> Salvador
>
>        From: Dave Philipsen <dave at davebiz.com>
>   To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
>   Sent: Monday, May 8, 2017 3:09 AM
>   Subject: Re: [Coco] Socket connector from transformer to motherboard in coco 3
>
> Just FYI.  I'd be willing to bet that the two parts I listed from
> Digi-Key are exact replacements for the connectors on the CoCo 3 main
> board.  The parts Salvador found on eBay are probably very close if not
> exactly the same too but you're probably better off buying from Digi-Key
> or Mouser or another big distributor where you are sure of what you are
> getting.
>
> I measured the pin pitch with a dial caliper and, frankly, I've seen a
> lot of Molex .156" connectors in my life and I know that's what this is
> just by looking at it.
>
> Dave
>
>
> On 5/8/2017 1:12 AM, Scott Wendt wrote:
>> Ok, I'll give it a try, thank you.
>>
>> ________________________________
>> From: Coco <coco-bounces at maltedmedia.com> on behalf of Dave Philipsen <dave at davebiz.com>
>> Sent: Sunday, May 7, 2017 7:28:48 PM
>> To: CoCoList for Color Computer Enthusiasts
>> Subject: Re: [Coco] Socket connector from transformer to motherboard in coco 3
>>
>> Hmmmm....that's interesting.  I just measured the connector pitch on my
>> CoCo 3 motherboard and it appears to be .156"  which corresponds to
>> about 3.96 mm.  The .156" pitch was a very common pitch used by
>> Waldom/Molex for many of their connectors and supports the fact that the
>> female connector on my transformer is stamped with p/n 5239 which
>> corresponds to a series that is still actively being produced.
>>
>> The female connector may be found here:
>> https://www.digikey.com/product-detail/en/molex-llc/0009524034/WM2335-ND/2405459
>>
>> The male may be found here:
>> https://www.digikey.com/product-detail/en/molex-llc/0026604030/WM4621-ND/96502
>>
>>
>>
>> Dave Philipsen
>>
>>
>> On 5/7/2017 8:31 PM, Scott Wendt wrote:
>>> I measured the pitch on my board and it was closer to 5mm, though my ruler could be a bit off.
>>>
>>> ________________________________
>>> From: Coco <coco-bounces at maltedmedia.com> on behalf of Salvador Garcia via Coco <coco at maltedmedia.com>
>>> Sent: Sunday, May 7, 2017 3:09:32 PM
>>> To: CoCoList for Color Computer Enthusiasts
>>> Cc: Salvador Garcia
>>> Subject: Re: [Coco] Socket connector from transformer to motherboard in coco 3
>>>
>>> The male connector that's on the board looks like this:
>>>
>>> http://static4.tme.eu/products_pics/9/6/d/96dc5871f1ef07408b7f65bcfb0954df/389183.jpg
>>>
>>>
>>> Three pins and the pitch is, I believe 3.96 mm.
>>>
>>> The male connector that you are looking for is possibly the following:
>>>
>>> http://www.ebay.com/itm/MOLEX-09-50-3031-3-Circuit-CRIMP-TERMINAL-HOUSING-3-96mm-Pitch-NEW-10-PKG-/200964494068?hash=item2eca6ad2f4:g:fbAAAMXQbflSN0rn
>>>
>>>
>>>
>>> Can anyone confirm or correct? Salvador
>>>
>>>          From: Scott Wendt <malfunct at msn.com>
>>>      To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
>>>      Sent: Sunday, May 7, 2017 3:34 PM
>>>      Subject: [Coco] Socket connector from transformer to motherboard in coco 3
>>>
>>> I was wondering if anyone could identify the style of connector that is used to plug the transformer into the motherboard on the color computer 3?
>>>
>>>
>>> I have a coco 3 that someone removed that connector and soldered the transformer leads to the pins on the motherboard and they often break off and I would like to put an original style connector back on the cable.
>>>
>>>
>>> Thank you for the help.
>>>
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>>> Coco mailing list
>>> Coco at maltedmedia.com
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>>>
>>>
>>>
>>>
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