COLD JOINTS
COLD JOINTS
A ‘Cold Joint’ is one where the solder did not melt completely. It is often characterized by a rough or lumpy surface. Cold joints are unreliable. The solder bond will be poor and the cracks may develop in the joint over time.
COLD JOINTS!!!!
REPAIR:
Cold joints can usually be repaired by simply re-heating the joint with a hot iron until the solder flows. Many cold joints (such as the one pictured) also suffer from too much solder. The excess solder can usually be drawn-off with the tip of the iron.
PREVENTION:
A properly pre-heated soldering iron with sufficient power will help prevent cold joints.
LET’S MOVE TO THE NEXT PAGE!!
22.