(Topic ID: 144405)

rate my board soldering -repining GI on system 11

By boscokid

8 years ago


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#1 8 years ago

Step 1

Ok all.It's been over 30 years since the US Navy asked me to solder anything but I was actually in school to be taught how to do board work correctly.

Fast forward three decades and I need to replace the GI molex plugs on my new Jokerz. I only have a 40 watt Weller with a thick chisel tip, so i borrowed a long in the tooth solder station from a friend (no name, no working dials, no country of manufacture but obviously was nice equipment at one time, and the tip was small enough for board work.

I had solder braid and some 60/40 .32 solder. goal was to remove two sets of burned up pins and replace with new ones from Great Plains Electronics. i did lay down so fresh solder on the pins traces I was clearing as I think it makes wicking much easier

Before - burnt connectors:

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Before - burnt pins on the backside

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After - new pins attached

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After - new pins on the backside of the board

So, Pinside, please feel free to critique my soldering. Does this look like passable work/? I verified there is no continuity between the trace pads and verified there is continuity at the end of the respective traces.

More importantly am i ready to replace the 100v diodes with 91v on my power supply board/?

Part 2 will be forming the new Molex connectors

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#3 8 years ago

Amazon was supposed to have a crimper in my hand Saturday by 8pm but that came and went, Sunday was a no show. Checked the mail today, no crimper. SO off to Great Plains to order what i should've ordered the first time

Anyway , these wires are cut back and stripped the proper length

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These are the two culprits J9 and J7 on the interconnect board. Symptom was GI completely out on the entire left side of the play field - - both upper and lower

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#4 8 years ago

got this tool:

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did these connections:

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#11 8 years ago

Thanks for the feedback guys. I knew better than to pull out those key pins so I have no defense for that

Chris, I did order the 1026-CT from GPE based on your recommendation in a 3 year old thread floating around here. Will update thread after I get a chance to crimp the actual connectors and finish the job.(should be here on Thursday)

This picture is the interconnect from my Police Force - it has no issues with GI currently but appears in need of replacement
too
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I will do this one this weekend using the suggestions given in this thread and see if I can improve on the soldering/amount of solder/pad covering/flux cleanup

#16 8 years ago

Finally got my 1026-CT crimper after USPS delivered it to the wrong address. Time to go to work!

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For better or worse this is what I ended up with. Critiques and comments welcomed

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For anybody that has never done this before I found it very easy if you put the new crimp contact into the crimper and close it just enough to hold it in place - then insert the wire and crimp. I also found it easier to do all the wire connections first then go back and crimp all the wire insulation.

General Illumination!! Yes, i have at least one bulb out

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