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A Guide to Fixing Broken Cables Options
Markwarren
#1 Posted : 12 December 2021 15:19:59

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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.
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Markwarren
#2 Posted : 13 December 2021 17:34:23

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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.
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delboy271155
#3 Posted : 15 December 2023 21:04:39
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Hi All, BigGrin BigGrin

The above guide to repairing wiring is spot on. Cool Cool

I`m going to add an extra and that is before you have a broken wire, take some detailed Pics of the wired parts as soon as you receive them.

Here`s my reasoning:

If you only have two wires, ie: one red, one black attached respectively to +ve and -ve you don`t have too much of an issue. In other instances (X-wing springs to mind) where there could be 4 or 5 wires attached to an item and more than one comes off, then this is a different scenario.

Wires in a "partwork build" can be moved more times than you realise and are therefore more prone to being broken. Add to that the Pics in instructions are not always that detailed to show where every wire is connected, then you have no information as to how to replace them. Blink

Also don`t forget that if you need to reconnect a wire, then it must still be long enough to reach its intended connection point. It may mean that you need to replace the complete wire that has broken.

These are just pointers, so that should a wire break and you have the means to reconnect/replace said wire then you won`t have to wait for the delivery of replacement parts.


Regards
delboy271155
(Derek) Admin
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