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Topic: [SOLVED] Unsoldering unsuccessful  (Read 1 time) previous topic - next topic

pwillard

Removing guck.   I use isopropyl alchohol and a *old* tooth brush I save for this sort of thing.  I have used vodka in a pinch... but would rather drink it than use it as a solvent.

raschemmel

I drink it before trying to remove solder...
Arduino UNOs, Pro-Minis, ATMega328, ATtiny85, LCDs, MCP4162, keypads,<br />DS18B20s,74c922,nRF24L01, RS232, SD card, RC fixed wing, quadcopter

Marciokoko

True but I didn't even have to smack it that hard.  It was just a few taps.

Marciokoko

#18
Dec 11, 2015, 12:47 am Last Edit: Dec 11, 2015, 12:50 am by Marciokoko Reason: image
Ok here is what is left:




Marciokoko

#19
Dec 11, 2015, 12:52 am Last Edit: Dec 11, 2015, 12:53 am by Marciokoko Reason: image
More pics:


raschemmel

Arduino UNOs, Pro-Minis, ATMega328, ATtiny85, LCDs, MCP4162, keypads,<br />DS18B20s,74c922,nRF24L01, RS232, SD card, RC fixed wing, quadcopter

be80be

#21
Dec 11, 2015, 01:22 am Last Edit: Dec 11, 2015, 01:23 am by be80be
#5 works even better with one of them little torches


raschemmel

#22
Dec 11, 2015, 01:25 am Last Edit: Dec 11, 2015, 04:07 am by raschemmel
AGREED

@OP,
Perhaps you should change your post title to :

"[SOLVED] Unsoldering unsuccessful "
Arduino UNOs, Pro-Minis, ATMega328, ATtiny85, LCDs, MCP4162, keypads,<br />DS18B20s,74c922,nRF24L01, RS232, SD card, RC fixed wing, quadcopter

Watcher

Quote
A solid block of smooth metal is even better. It must be hard and it must be smooth.
Why is this so critical?

MorganS

So that you can peel off the solidified solder after it lands on the smooth surface.
"The problem is in the code you didn't post."

Marciokoko

@raschemmel

Yes, Im a believer now! :-)
Btw, I did change the title of the post.

Thanks

MarkT

I have never had any luck with solder wick. I suspect my technique is bad, since others say it works. I've always had access to a solder sucker though, and I've had great luck with those.
It oxidizes rapidly, so you have to discard the end that's been open to the air anyway, and use
extra flux to breakdown the copper oxide.  If its over a year old replace it as a matter of course.
[ I will NOT respond to personal messages, I WILL delete them, use the forum please ]

doughboy

just for additional info, if you want to remove a pin header, you need not melt the plastic. the plastic will just slide off the pins. Then you can easily apply heat and remove each header pin one at a time.

Marciokoko

#28
Dec 13, 2015, 01:40 am Last Edit: Dec 13, 2015, 01:41 am by Marciokoko Reason: image
Thanks doughboy!  Yes I actually realized that as I first applied heat just to the pin part and it did happen, but then I realized I actually needed to be an octopus to have 1 hand holding the soldering iron, 1 hand holding the tweezers pulling the pin headers and the other holding the shield.

Anyway, I wanted to post the shield re-soldered.  Its not perfect but its a long way from my first attempt at soldering a few months ago on an LCD screen module.


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