Desperate soldering beginner urgently seeking advice?
Hello everyone,
I urgently need advice. I'm trying to solder a 12V retro fan to a 12V AT connector using new heat shrink tubing. See picture for equipment. I'm an IT professional but not an electrician. I did some soldering in school 25 years ago and have also successfully soldered a few other cables, like the PC fan.
Normally you heat the cable and then add solder to it so that the solder is coated by the cable, then the soldering works perfectly, like with the thin fan cable.
BUT this damn 12V AT cable just won't work! I've had four attempts and wasted at least an hour, but no matter how much I heat the cable, the solder beads up and doesn't stick, as if the cable is bewitched. Sometimes the solder even jumps off like a magnet with the same polarity. It can't be the temperature, because the insulation melts, and with the thinner cable, it works immediately.
What am I doing wrong? I can't get any further.
I am grateful for any advice.
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Heat is too weak, cables could absorb the heat while brazing. Soldering piston maximum preheating small amount of flux/solder water etc. on it. What else helps to cut off the cable again, then clean the metal intensively, eg with alcohol or something else, maybe also with a bit of grinding paper. If necessary, cut a piece of cable and make a soldering test (whether it is solderable at all). If there's nothing, Luster Clamp, ready.
Soldering water has nothing to do with electrical and electronics.
There is then clearly no flux.
Ask Amazon for soldering paste, like this: M2
There are actually also cables that cannot be soldered, because then flux does not help.
Had this with Chinese Dupont Wires, they could not be brazed by river means.
Sometimes the cables have some sealing. It often helps to hold lighters and torch them and then try again.
Some cables do not adhere to a surface treatment on the tin, which then has nothing to do with the soldering plugs, but the cable cannot be soldered.
I haven't been under my eyes many times, but I've seen it before.
Hello
There may be an oxide layer on the wire that prevents this. Using a fine sanding paper could help
Greetings HobbyTfz
Is there flux in the soldering tin?