PCB Technical - How to deal with the circuit board soldering off

How to deal with the circuit board soldering off

Some friends will ask what should I do if the pads of the circuit board are soldered off, and how to deal with it? Shenzhen circuit board proofing manufacturers also encountered the same situation when they were producing circuit boards.

When the circuit board is soldered, the pad falls off because the soldering time is too long or the temperature is too high due to repeated soldering. The copper sheet of the circuit board pad will only fall off after repeated expansion. Pay more attention to this to prevent more falling off when soldering.

The circuit board cuts off the peeled pads with a knife and cuts them to the place where they are not peeled off to prevent the circuit from expanding along the peeling place. If your component pins are long enough, you can scrape off the insulating varnish at the circuit joints after cutting, and finish it. Solder the far-sighted pins here. If your PCB circuit board component pins are not long enough, you can use a piece of thin wire to solder through the pad hole and then solder to the component pins, and solder the other end to the soldering Use hot melt glue to fix the joints of the disk to prevent re-opening and falling off

If the pad of your circuit board falls off very seriously, the above method is not suitable. You can also choose the flying lead method. Solder one end of the wire to the pin of the desoldered component, and the other end is soldered to the pad that is connected to the desoldered pad. On any solder joints. There is another way, bridging. If there are components on the same circuit around the soldered pad component pins, you can directly solder the component pins to the pins of that component and discard the original pads. Of course, when soldering, you must see clearly that you cannot solder the string to prevent burnout of the components.

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