PDA

View Full Version : Desoldering using a desolder pump



soakes94
08-16-2010, 02:33 PM
Hey :) So I have fried some chips on my ledtriks boars, I cut the chip of the legs and I have removed the legs from the holes, however I cant get the solder out, I have tried using desolder braid but that didn't work to well for me so I've got a desolder pump, does anyone have any advice on the best way to use one?

Thanks

LabRat
08-16-2010, 02:43 PM
Hey :) So I have fried some chips on my ledtriks boars, I cut the chip of the legs and I have removed the legs from the holes, however I cant get the solder out, I have tried using desolder braid but that didn't work to well for me so I've got a desolder pump, does anyone have any advice on the best way to use one?

Thanks

Throw it away..and go back to the braid. :mrgreen:
Unless it's the type that heats and has a vacuum attached to it.. I find them almost useless. That being said... I had best results by getting the board mounted vertically, so that you can access both sides of the board. Heat from one side and line up the solder-sucker on the other (right over the hole). Once the solder melts.... remove the iron and trigger the unit (almost, but not quite simultaneously).

Back to my original point.. solder braid (for me) is far superior at wicking up the solder. Sometimes if the hole isn't very full, it's hard to get the braid to interact with the solder. I find that adding more solder first... and then coming back and attacking with the braid.. will almost always give me a pad that looks almost new. Also.. how coarse is your braid? The "fine wire" braids do a better job on the smaller holes etc.

Your mileage may vary.

Edit: also.. check out desoldering on Youtube... there are plenty of tutorials there.

dirknerkle
08-16-2010, 03:01 PM
I've actually had pretty good luck with a simple thin cocktail straw and my soldering iron. You put something under the board so it's not flat on the bench. Hold the straw close to the hole, hit the hole with the iron to melt the solder and just blow the melted solder through the hole. Keep blowing while you remove the iron and it will cool instantly. You don't have to blow really hard. and coctail straws are cheap.

soakes94
08-16-2010, 03:29 PM
I've actually had pretty good luck with a simple thin cocktail straw and my soldering iron. You put something under the board so it's not flat on the bench. Hold the straw close to the hole, hit the hole with the iron to melt the solder and just blow the melted solder through the hole. Keep blowing while you remove the iron and it will cool instantly. You don't have to blow really hard. and coctail straws are cheap.

And remember never to suck lol

budude
08-16-2010, 03:38 PM
And remember never to suck lol

I think that's a general/generic motto for everyone! :p

soakes94
08-16-2010, 03:39 PM
I think that's a general/generic motto for everyone! :p

Yeah :p

Wombat
08-16-2010, 06:34 PM
you can also get some joy by heating the solder and putting an offcut piece of wire back into the hole and then using the braid/soldersucker to suck the hole out again this often helps.

Wombat

Matt_Edwards
08-16-2010, 08:02 PM
I use the heat and tap method.
Cut the pins.
Flip the board and apply flux.
Heat the pin.
Tap the board gently on on a soft wad of stuff.

If you get too aggressive, throw the whole lot in the bin as you can also crack components and tracks.

Dennis Cherry
08-16-2010, 08:16 PM
Used many desoldering tools in my life,and my personnel one for home use is this.

http://search.digikey.com/scripts/dksearch/dksus.dll?Detail&name=K412-ND

Works fairly well after you get use to it.

budude
08-16-2010, 08:45 PM
Used many desoldering tools in my life,and my personnel one for home use is this.

http://search.digikey.com/scripts/dksearch/dksus.dll?Detail&name=K412-ND

Works fairly well after you get use to it.

That is similar to what I use - it's a bit tricky to heat and then pop this on to suck up the solder but I think it does a better job than the simpler bulb/squeezy type. Adding solder helps at times as many have suggested.

soakes94
08-17-2010, 03:27 AM
http://search.digikey.com/scripts/dksearch/dksus.dll?Detail&name=K412-ND

That's what I have ordered, it should arrive today, I had one before but it heated the solder its self but the end snapped of lol so it wasn't much use

budude
08-17-2010, 03:41 AM
That's what I have ordered, it should arrive today, I had one before but it heated the solder its self but the end snapped of lol so it wasn't much use

You'll want to order additional tips also - while mostly resistant to heat, eventually they wear out.

soakes94
08-17-2010, 03:44 AM
You'll want to order additional tips also - while mostly resistant to heat, eventually they wear out.

Okay thanks for all the info everyone :) I will have a go with my sucker later today then it arrives and if it works I will either buy some more or new tips as I will probably end up needing to repair a few of my bored as I break them lol

soakes94
08-17-2010, 06:38 AM
My desoldering pump arrived today, I took it out the packet and went to use it, I got one suck from it then it fell apart :( so I have sent a message to the guy on ebay and I better get a new one quick lol

WWNF911
08-21-2010, 08:42 PM
Although I haven't tried it yet. Several people have had good luck using the de-soldering tool that Radio shack sells. (It has a red bulb attached for sucking the solder off each joint) It sells for a mere $11.00.

Leon

bmcgeeny
08-22-2010, 07:13 PM
Although I haven't tried it yet. Several people have had good luck using the de-soldering tool that Radio shack sells. (It has a red bulb attached for sucking the solder off each joint) It sells for a mere $11.00.

Leon

I have one of these and it works fantastic. The two complaints I have are that it takes to long to heat up and in order to get all the solder out of the pup you have to tap the tip and then blow it out again.

mikentn
08-23-2010, 12:13 AM
Used many desoldering tools in my life,and my personnel one for home use is this.

http://search.digikey.com/scripts/dksearch/dksus.dll?Detail&name=K412-ND

Works fairly well after you get use to it.


I bought one similar from CSI when I bought my solder station, and was pleasantly suprised that the body was made of metal. Seems to be well made.

http://www.circuitspecialists.com/prod.itml/icOid/6985

The only problem I have with using braid is that the last time I used it, I lifted a pad.:mad: