I'm experiencing a tough problem with mi LCD display,in the begining the display had the trough hole pins for connecting to the breadboard and it worked well.Then I bought an I2C module and I wanted to attach it,so I desoldered the display's pins,but now I can't take out the solder from the holes,so the I2C pins can't pass trough and the metal plating on the display contacts detached,so the solder doesn't even stick anymore.
Do I have to buy a new one or is there any chance of saving it?
Thanks for the help
Are these the holes you can't get the solder from?
Solder Sucker and/or Solder Wick.
Sometimes you heat it up and open the hole with a toothpick, or open the hole a bit larger with heat and a toothpick.
Sometimes you can heat it up and slam the board down, using G-force to knock the solder out. But you might not want to do that with an LCD.
Your symptoms indicate way TOO much heat on your soldering iron. It must have a very fine, pointed tip. Use liquid flux on the pin you want to remove and then apply the iron. Invest in a spring loaded solder sucker! Invest in solder wick to clean up the old solder. Apply the wick between the iron and the pad and move them round a bit until the solder is wicked up.
Yep
The wick did not help at all and I will buy a sucker ,but the solder won't stick without the plates so I don't think it's possible to save it
To me it looks like you have ripped the copper pads off the PCB while removing the pins. If the copper pads on the other side of the PCB are still ok, you might be able to repair. But if they are also ripped off, it's junk.
Removing these pins, when they are holding 2 PCBs together, is very difficult without damaging something. You have to get each pin heated up so that the solder melts in both joints, then pull the pin smoothly out using fine pliers. But the pliers will cool the pin, making it difficult to keep the pin heated. If the pins have been cut off neatly, often there is not enough pin sticking out to enable the pliers to grip it.
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It helps. Everything just needs to be done with skill.
Apply a lot of flux to the wick before use.
I agree with this statement.
But as I observed that the OP has little skill in soldering, I think it is very difficult for him to be able to recover the LCD.
I recommend you get some old electronics that are scrap and practice removing components while trying not to damage the PCB.
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Thanks all for the help
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