[sdiy] Error on the SoundBite board!

Paul Schreiber synth1 at airmail.net
Mon Feb 4 06:52:46 CET 2008


> Do you have a good trick for unsoldering 0805s? Or do you have rework 
> tools?
> Just curious; undsoldering SMT packages turns out to be a lot trickier 
> than
> soldering them, in my experience.

Well, I just use a small width Solder Wick and get as much solder as I can 
off each end of the part. Then, I use a pair of needle-nose pliers and twist 
the part off the board. 99% of the time, it just pops off without 
cracking/shattering. The nickel end caps will usually still be stuck to the 
pads, I then use the Solder Wick and essentially wipe the pads with the iron 
pressing down on the Wick. I am not trying to preserve the original 
resistor.

I then use 0.021" no-clean solder and put a *very tiny* bit of solder on one 
of the pcb pads. Using tweezers, I press the part straight down on the pads 
with one hand, the other I just touch the end termination with the iron. 
This is enough to make the part 'stick' on the pads. I then apply a *tiny* 
amount of solder to each end termination.

Paul S.




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