| Electronics > Repair |
| What precaution to solder those tiny gauge ? how to ? |
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| Gyro:
Up till now, the OP has used a 'make do and mend' strategy, and I think, want's to continue that way. It's bit of a shame that they cut away so much rubber (including from the strain relief grommet to expose the wires but there's nothing to be done about that rather than the more difficult option 2. . I'm sure the wheelchair manufacturer would be more than happy to sell them a new joystick, complete with new cable fitted [EDIT: For a price, from the experience of a neighbor who had a similar problem!]. From the photos, the cable clearly isn't designed to be disconnected at the joystick end (a more considerate manufacturer might have fitted a connector there and sold just replacement cables). I'm sure there will be a connector on the other end of the cable where it plugs into the wheelchair main controller box. As Swake points out, if option 1 doesn't work, then option 2 is still available, as is buying a new joystick and integral cable. If the other wires are still intact and don't have any bare copper showing through the insulation then there isn't anything to loose. The OP has limited technical and soldering skills, so the simpler the repair, the better. @repairs: Sorry to have used a technical term in regard to the blue and green twisted pair. Just keep them together after repairing the blue wire. It will still be possible to put a few twists in them afterwards to help do this... or a couple of bits of tape. It's really not critical for the length involved. |
| repairs:
--- Quote from: coppercone2 on January 10, 2025, 07:35:37 am ---A splice to a torn wire is one thing, but heavily deformed wire near a bend is something that should get some serious thought. The only flaw the OP identified is a ripped wire and damaged strain relief, but it looks like the degradation might be substantially worse. I just think the situation might have been appraised incorrectly. I think it looks like that wire is going to tear open down the middle and expose copper conductor --- End quote --- Hello coppercone2, wich wire do you talk about when writing heavily deformed? the blue one? From what i understand you are saying that even if a wire still has its insulatin colored plastic it can be broken inside? If the colerd insultor is still intact does it not force the connection even if some part of the wire are broken apart? Meaning How often do we see a intact insulating colored tube contain an area where there is absolutely no metal wire touching each other ? Thanks |
| repairs:
i think it is called a redel connector It seems to be super rare to come by now . Idont know why . |
| coppercone2:
the red wire, its supposed to be a cylinder but it looks flattened What happens sometimes is that when it gets like that, the wire splits open down the middle, and some copper pops out. if two wires do this, you can have a short circuit. A wire insulation can only take so much fatigue before it does something bad. Losing its shape is the first sign. and when its deformed like that, you have way less thermal resistance, because its messed up and thinner, so a short duration overload that might have just slightly damaged good wire can lead to a full on short circuit if you have deformed wire (lets say a few seconds of gross overcurrent) All the consideration that the designer made choosing wire with regards to durability and ability to survive various scenarios is effected when the wire is deformed. It's kind of like finding a crack in glass. Sure it might work, but its weaker, and problems can start from there. I see it kind of like this. Its a bit better for you because you only have a 12V circuit, but deformed wire + higher voltages = where it is eventually going to start arcing, making it even worse on mains electronics. And, even if its low energy or even un-energized, wire CAN still split open from just mechanical things unrelated to electrons. Though, usually the most common thing that happens in this case, is that you see a tiny sliver of copper, its like a hairline fracture, and then this mostly just causes a problem related to water. but you never know |
| repairs:
--- Quote from: coppercone2 on January 10, 2025, 05:10:22 am ---are you sure you want to modify this? That red wire looks... like it had better days. That wire looks like the kind of wire you better replace before it suprises you, so I think that cable is pretty much compromised RIght now its just broken because of a open wire. It looks like that red wire can chew through the insulation and short with another wire, causing a much more serious problem, possibly breaking connected stuff. :-\ I would just call yourself lucky that the red wire did not short out something important and replace it. Really, the blue wire breaking is helpful because it is a friendly warning signal for you to replace the cable. When insulation looks flattened like putty, it means its time for the trash can. That red wire looks thick too, its a power wire that has some current on it. That wire can cause a big problem I think, possibly including cable fire. --- End quote --- Hi what seems to be wrong with the red wire? You perceive it as being flat or about to cause trouble? Could you circle where in the pictures it is giving you that signal? |
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