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can anyone tell me about removing small bits of solder from a chip board that needs a swith replaced?

I have a wii hero guitar and inside the stummer switch has to be replaced. I have new switches but need to melt solder to remove the chip board that the switch is attached to. I have a 40w soldering iron, solder sucker and solder wick. I don't seem to be able to melt all the blobs of solder only a bit of it, not enough to be able to remove the switch. Can anyone tell me how to melt all solder to remove it from the chip board it's attached, to be able to remove the switch

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If you're trying to release something with lots of legs, and you know the thing that's coming off is dead, its best to just cut the legs off and remove them one by one. Destroy the part and not the board.

We've used a hot air paintstripper before now, to remove IC sockets from boards when we  really needed a certain one that we'd no stock for. This takes practice.

nepheron7 years ago
Melt the solder, then WHACK the board against a table top. The board stops, and the solder keeps going... do this for each pin and wiggle the switch out.
DON'T WHACK!
YOU WILL BREAK YOUR CIRCUIT BOARD AND FLING SOLDER EVERYWHERE, MOSTLY INTO YOUR EYES! AND YOU WILL SCREAM IN PAIN AS WELL AS IN ANGUISH OF SOUL THAT YOU LOST YOUR FAVORITE GAME! LIKE THIS: AAAAAAAAAAAAAAAAUGHH MY EYES! AAAAAAAAAAAAAAAAAAAAAAAAUGH MY GUITAR HERO!!
That is all.
i got it down to a science. i use a flat surface like my coffee table, and a pair of big square pliers on the table. i melt the solder with the iron quickly and wack the pliars, the cold metal of the pliars cools the solder instantly and keeps it all contained on the table inside the V the handle makes.

it takes a bit of practice to get at first cuz u cannot even let your arc of the 'wack' be too long or the solder will cool.

if u dont care about the board at all and are trying to get the pieces out, this works well, and u do not need alot of force at all. i dont really recommend it for getting chips out though.

ps... when the solder gets on skin... its really not that bad, ive had far worse pain than that just bumping into things.
framistan7 years ago
If the switch has pins that you can clip off, then you only need to fight ONE pin at a time.  Another method is to use the solder sucker and suck solder
out of each pin.  Then you will notice the pin has what looks like NO solder
in it, but is still STUCK to the sides of the hole with solder.  DO NOT force the pin out!  instead, use your solder iron to gently PUSH the pin away from the side it is stuck to.  you will hear it make a little "TICK" sound as it breaks
free. quickly remove the iron from pushing the pin.... now ONE pin is free. 
do that to EACH pin untill all of them are free.  When ALL pins are free, then you can gently pry the switch out or it might just FALL out on its own.  BE SURE all pins are free before prying on it.  your main objective is to not damage the board. Sometimes during this process, you will notice you cant get solder sucker to suck solder effectevely. in this case, add FRESH solder to the pin as though you are SOLDERING the pin back in place.... then back to the solder sucker.  This is a skilled procedure that takes just the right amount of pushing, heating, more solder... etc to accomplish without damaging the board. 
If you apply liquid rosin to the solder joint and to the wicking you will probably have better luck with wicking, and sucking too.
lemonie7 years ago
You could try "rocking it" - You pull on one pin (or set of) heating them, then pull the other way, and repeat easing it out.
However, I don't really see why you couldn't do it with what you have. Fluxed, wetted-bit?

L
This always works for me. And like steveastro-UCK said, "destroy the part and not the board."