saturn5tony via groups.io wrote:
Hi Lee,
Thank you so much for your reply and kind words. It was a real rookie mistake Lee. Not only new to this connector but new to the type of flux I got from ebay a few months ago too. It was a fresh batch of NO-clean flux I just got. I should have realized it being so thick.
These molex connectors are the ones you recommended (the 10-pin Molex
22-18-2101) that I got from Mouser. They must have had them on the shelf
for a long time, because when I was soldering them they had a real
problem sticking to the solder.
That's really odd. First, because Mouser usually sell pretty new stock. Second, I've never run into a problem soldering them, even with really old ones out of my "gold mine" (i.e. junk box).
What kind of solder did you use? I use good old Kester 63/37 tin/lead with rosin flux. I never have to use any separate flux, unless I'm trying to solder something really unusual.
It is possible to get flux in a bad place, like right on the contact area of a connector. But I generally clean my boards with isopropyl alcohol.
I know there are no-wash and water-washable fluxes; but I generally don't use them. They don't seem to work as well for me. Note that there isn't anything on the Membership Cards that you can't water-wash. I've even put boards in the dishwasher! :-) Just be sure to dry them off really good before use. I dunk them in isopropyl alcohol after any spraying or immersion in water to get out every trace of moisture.
Lee
--
We cannot solve our problems with the same thinking we used when we
created them. -- Albert Einstein
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Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com
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Lee Hart