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Desoldering is an important skill to learn once you've gotten the hang of soldering, because messing up a soldering job isn't improbable.
This process is the removal of solder and components from a circuit board for troubleshooting, repair, replacement, and salvage. It is the reverse process of soldering. It is a process of removal of solder and components mounted on circuit boards. The soldered joint is removed by the process of desoldering.
For this purpose a small sucker/pump is used to remove solder from the plated through holes. The lead over which the desoldering tip was placed is moved in a circular motion for rounded leads and back and forth for flat leads
Material Needed for Desoldering:
Solder Sucker/ Desoldering Pump
The most commonly used and convenient equipment needed for desoldering is the desoldering pump. A good manual solder sucker like this one works pretty well for selectively removing through holes parts from a PCB.
Desoldering Process:
1. Heat up the solder you want to remove with a soldering iron.
2. Press down on the plunger (If your pump has a bulb, just squeeze the bulb).
3. Once the solder is molten, place the tip of the desoldering pump against the solder that you want to remove.
4. Release the plunger or bulb. Some desoldering pumps have a release button so that you don't have to hold it the whole time.
5. Remove free component.
6. Repeat steps 1-4 to remove any excess solder.
7. Dispose of the solder inside the pump by repeatedly pressing down and releasing the plunger.
Desoldering Process using pump in its simplest way:
Desoldering Process using wick in its simplest way:
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