Copper Talk » Open Forum » Archived Messages » 2003 » 04/01/2003 to 04/30/2003 » De-soldering question « Previous Next »

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Stitches
Posted on Monday, April 28, 2003 - 8:25 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Is there another way to remove a bunch of components from a PC board? I know this is far fetched but, maybe some kind of acid That would desolve solder but not harm the componets?
I've got a bunch of PC boards with about a Bazillion componets to remove and there has GOT to be a faster way to do it. Any thoughts or ideas would be a great start from anyone, because one piece at a time...Man, that's gonna take too long! Thanks
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307
Posted on Monday, April 28, 2003 - 9:19 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Heat Gun and a rubber mallet does GREAT!!! Place the board between 2 pieces of 2X4 , heat the solder side up till the solder starts to flow..Whack the board gently..All the parts "FALL" out...

307
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ryan
Posted on Monday, April 28, 2003 - 10:29 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

go to radio shack and get a desoldering tool or a solder sucker. i dont know how i lived without it before.
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bruce
Posted on Tuesday, April 29, 2003 - 4:35 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

crazy as it sounds the rad shack desolder gun with squze bulb works GREAT!
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de
Posted on Tuesday, April 29, 2003 - 6:40 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Re removing the solder...

Or oops I put it in the wrong place.

I will save the very best for last because it is the most expensive.

What you use depends on the size of the job and or the number of times you will be doing it.

The least expensive is that little round sucker bulb with the teflon tip so such out the melted solder.

Followed in line by that spring driven solder sucker. You load the spring and hit the trigger. The sudden vacume sucks up the solder.

Then there is the ever loyal "Solder Wick" or chemically treated copper weave to absorb the solder.

All three of these are the inexpensive methods for small jobs. But on to the better class of methods....

Radio supply stores sometimes sell a hybred soldering iron kind of thing. A heated tip with a sucking device that melts the solder and you suck the melted solder directly using the heated tip.

The better ones use an extended tube with spring loaded vacume device and the OK ones use just that little squeezie bulb.

NOW for the BEST...

This one is for those who do a great deal of solder sucking or someone who wants to own only the very dang best. It is a commercial grade desoldering station. It is used mostly for high density boards and situations in which you are handling heat sensitive components. They are usually tempature controlled and grounded.

BUT they are definately NOT Inexpensive.


For the average person who in general has little daily use of a desoldering station get the little bulb sucker or the spring loaded device. Clean the little sucker tube frequently to keep it working properly--solder does reharden in the little sucker tube and clog it up from time to time.

You mentioned you had a lot of parts to remove. Before you dive into the big expensive commercial unit try a half decent solder sucker on the soldering iron device. It will be faster than the wicks and a lot more convient.

DEFINATELY DO NOT EVEN THINK OF USING ACID. Do not even use acid core solder for electrical components. Acid will destroy most electrical components.
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Stitches
Posted on Wednesday, April 30, 2003 - 7:55 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Thanks for the answers, it's time to get busy.
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Simon
Posted on Wednesday, April 30, 2003 - 9:47 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Dont use the method I saw one student use in an electronics class I was helping to teach. He took the board over to the bandsaw and started cutting it up in individual components. Needless to say he wasnt allowed to continue for long.
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Stitches
Posted on Wednesday, April 30, 2003 - 6:22 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Hahaha.....Simon that was good!