For full instructions on how to desolder through-hole solder joints, click here.

Set your soldering iron to 375 °C (707 °F) and press the tip against a joint to heat it.

Don't heat the joint longer than 15 seconds at a time, or you risk damaging the solder pad.

If you're having trouble melting the solder joint, apply some leaded solder onto your soldering iron tip and try again. The leaded solder helps with heat transfer while lowering the melting temperature of the existing lead-free solder joint.

Once the joint's molten, use a desoldering pump to suck away the solder.

Repeat the heating and sucking procedure a few times on the same joint to remove as much solder as possible.

Don't heat the joint continuously for longer than 15 seconds at a time to avoid damaging the pad.