Electronics > Repair

Removing solder from stubborn joints

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pharaoh3:
I have a PS4 controller that I want to replace the joystick on, so I disassembled the controller, added flux, added additional solder to all the joints, and removed the faulty joystick with a heat gun. Everything went well, but I ran into a few problems during the next step which was removing all the solder from the joints with a soldering iron, solder sucker, and a wick. The problem is that I have a few joints with a incredibly thin amount of solder that is quite difficult to remove since I can't get my iron and sucker on it at the same time. What is the best way to remove the solder ?



I have tried adding additional solder, adding more flux, using a wick, and heating up the board with a heatgun then switching to the iron. I have even tried attaching a resistor to the joint, adding solder, and then attempting to remove the solder again. What do I do? Note: This is for fun/practice, and not for a professional repair, so I am willing to experiment.

ataradov:
Sharpen a toothpick and poke a hole in the molten solder. Then remove the extra solder that comes out on the other side.

pharaoh3:

--- Quote from: ataradov on October 28, 2021, 12:52:06 am ---Sharpen a toothpick and poke a hole in the molten solder. Then remove the extra solder that comes out on the other side.

--- End quote ---

I don't think I could fit my soldering iron and a toothpick on the joint at the same time.

Plus, I don't have a toothpick handy...

ataradov:
Why? There is lots of space on the board. Just hover the toothpick over the hole and once the solder is molten, push it though the hole. This is a standard method for dealing with stuck holes, it always works.

Wood can take quite a bit of heat, so heating the annular ring will let you push the toothpick though the hole further.

Get anything wooden. There must be something around, like a match.

Otherwise you will just destroy the board. There are not too many methods of dealing with this.

Also, it does not look like you have enough flux judging by the picture.

pharaoh3:
You sound confident that this is the technique to use. I turned in for the day, so I will have to report back tomorrow

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