Dry Solder Joint
Dry solder joint or dry joints cause lots of problems in electronics repair. It could cause an equipment to malfunction or give intermittent problem that is hard to solve. The dry joint can be easily detectable with our bare eyes or it could only be seend with the help of magnifying glass. Sometimes you can’t even see it with magnifying glass. How do I know? Because after applying fresh solder the equipment have no more intermittent problem.
Rules of thumb about dry solder joint is that whenever you have repaired an equipment that is more than few years old, after replacement of any electronic part, you should at least spend few more minutes to inspect other area for dry joints. The reason for it is you do not want the customer to send the equipment back to you after he has taken it back. This will cause frustration to the customer and you may be get scolded for repeated repair. Just make sure everything is right and burn in test the equipment fully before sending it back to customer. If the repeated call is low then you will have more jobs for you to do.
In certain cases, dry solder joint could also happen to new equipment. I have seen it many times especially the equipment just came out from the contenna. There were cracks and dry joints in some of the equipment. Think of your customer first and surely he or she will continue to send equipment for you to repair if your work is reliable.