(Except Chinese public holidays)
A "cold solder joint" is simply a solder that doesn't melt all the way through to create a perfect joint. In a cold solder joint, the solder doesn't form a strong and reliable connection between the components or leads it is meant to join. This lack of proper bonding can lead to various issues, including increased electrical resistance, intermittent functionality, and a higher likelihood of component failure.
● Inadequate solder wetting, reflow, or melting of joint.
● Vibrations or other disturbances while the solder cools.
● The flux prematurely breaks down when the process temperature is too high.
● Use a desoldering tool or the pointed end of a soldering iron to scrape off the excess solder.
● Wait for the excess solder to melt by pressing the iron or tool's tip against it.
● Slowly wick away the hot solder using a section of desoldering braid.
● After removing the extra solder, inspect the junction and ensure no gaps and voids. If not, you must first fill them out to continue.
● Re-flush the junction and use the soldering iron to warm it up. The flux will stop oxidation and aid in the uniform flow of the new solder.
After the joint has cooled, ensure it is secure and free of gaps or voids. If the connection is still insecure, you can try doing it again.
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