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A Guide to repairing a broken cable.
When building a kit with some sort of electronics built into it, you will have a circuit board with many cables that you will fit into. Occasionally, these cables can be damaged, particularly when they are being handled quite frequently, pulled on and off a circuit board or being pulled through a hole in the model. It does get frustrating to find that a light or motor is not working when it is all pieced together. Here is a guide to help find those dodgy connections.
First, check to see if any cables have bent pins, this is the main culprit on a circuit not working. Next is to check the cables. This may not be as easy as some broken solder joints are hidden inside the heat shrink tubing. It is well worth feeling the joint for any loose connection.
The guide here is to show what to do if you should find a broken joint.
Markwarren attached the following image(s):
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Just a follow up from the previous post. When tinning a joint, you would usually use a flat headed, 45 degree angle, soldering iron tip to heat the joint. However, in this instance the cables were so small a pointed narrow tip was used. If your soldering iron has a temperature gauge, set it to around 325 degrees. Any hotter then this will result in the flux burning off to quickly. Picture 1 show the size of the cable used in the last post and picture 2 show the flat headed tip used for larger cables. Markwarren attached the following image(s):
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