Place the motherboard on a durable surface. Molten solder is extremely hot and will damage heat-sensitive surfaces and cause a fire hazard, so use a metal or solid wood surface. Turn the motherboard over onto its back.
Plug the soldering iron in and allow it a few minutes to heat up. A hot soldering iron is much easier to use than one that hasn't reached its peak temperature. While the iron is heating up, inspect the connection points of the jack to familiarize yourself with what you will desolder.
Place the soldering iron in one hand and the copper braid or desoldering pump in the other. Use the iron to melt the solder and suck it up with the pump or the braid. Hot solder may drip through to the other side of the motherboard, so make sure your hands are clear of that area. When you have removed as much solder as you can, continue to Step 4.
Replace the pump or braid with the needle-nose pliers. Use the iron to heat any residual solder and gently pull the jack free with the pliers. Do not rush or try to force the jack. You may damage the delicate electrical trace, which will require further, extensive repair.
Place the old jack aside. Use caution; it may be hot. Use the toothbrush and alcohol to clean the area. This will help keep the new solder clean and facilitate a stronger bond to the board. Leave the board to sit and dry. The alcohol will evaporate by itself.
Use the rosin-core solder and the iron to lightly coat the connection points on the motherboard where the new jack will sit. Install the new jack and apply some more solder to the connectors. When the area has cooled, plug in the power adapter and look for any lights indicating that the motherboard is receiving power. Reassemble the laptop.
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