De-Soldering

De-Soldering
Posted by Matthew Hadler at 2013-05-05 18:41:35
Does anyone have advice on how to remove a piece from the circuit board once soldered? I've tried to wick off the solder with a soldering iron but that seems to be impossible. Thank you.
Re: De-Soldering hints & tips
Posted by Perry Weinthal at 2013-05-21 22:04:58

Matthew Hadler wrote on 2013-05-05 18:41:35:
Does anyone have advice on how to remove a piece from the circuit board once soldered? I've tried to wick off the solder with a soldering iron but that seems to be impossible. Thank you.


Mathew,
I've had to replace two different switches, the controller box got stepped on and the switches stopped working properly.

Do get a Solder Sucker, they really will help -- but the trick to making the Solder Sucker or Wick to work is to ADD MORE solder. Yes, add more, so the heat flows and the Wick or Solder Sucker can work.

The best way is to actually DESTROY the switch with a pair of SMALL wire cutters.
Leave the terminals large enough so you can grab them with hemostats or pliers.
Gently cut out the part, DO NOT cause the board to flex to much.
This allows you to work on one pin at a time. 
Be very careful, the PCB is prone to peeling the copper off -- DO NOT PANIC, just lay the copper back down and solder it back down  OR add a replacement wire to fix the problem.

The main cause of peeling the copper is over heating the board, sometimes it will just happen to make your day extra special.

I Suggest using vise to hold the board so you're not chasing around the table.

Remember to use safety glasses, I tell all the students: Do not look in to the laser with your remaining good eye.

Hopes this helps.
Perry




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