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Post by svart on Feb 2, 2022 12:08:51 GMT -6
Years ago I had some junk paging mics with broken coil leads, and managed to fix all of them. Don't know why I went there, but it was possible! If I could only figure out how to get some solder on this teeny wire without burning it off, I can fix this capsule and perhaps one other. As it is, I'm at the lowest setting on my iron. |
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Post by svart on Feb 3, 2022 9:15:19 GMT -6
So I experimented once again trying to get these stupid little wires soldered. I got my iron down to 400F but it was barely enough to melt the lead solder. I had to go up to 500F to try the lead-free solder. The lead free solder was flux cored and that seemed to tin the wire much better, but the wire still burned back some. I switched to lead solder and I was able to get the wire to bond with the strand, finally!
Unfortunately during the process I dropped hot rosin on the diaphragm and it melted a hole through it.
It was a good experiment though. I have one more capsule with no continuity that I can try this on.
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Post by svart on Feb 4, 2022 8:13:25 GMT -6
Sad news for those who are following this thread. The last dead capsule was truly dead. I found that the wire from the capsule to the post was broken, something I think I might have done when getting the humbucking coil basket off the diaphragm, and I spent a good part of an hour gently cleaning the glue and such off the post and wire. I was able to tin the wire and get it soldered to the post..
Only to find that it still didn't have continuity.
After messing with it and double checking both sides, I decided to take the diaphragm off the base only to find that the wire was broken at the coil itself as well. There's no fixing that.
I *might* try taking the coil off the melted diaphragm and swapping it to this diaphragm at some point although I currently don't know how to do it. I guess I have nothing to lose trying.
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Post by svart on Feb 7, 2022 9:32:08 GMT -6
So I tried something crazy. I swapped the coils from one diaphragm to the other. I was able to easily remove the coils and unwind a half turn of both leads to get enough wire to solder. I took the good diaphragm and was able to tack the other coil to it, but I had a really hard time getting it lined up on the crease where the other coil was removed. I think part of the problem was the remaining glue and part of the problem was that the coil distorted slightly when being removed. Even working as gently as possible I could only barely get it lined up. I was also not able to get it perfectly aligned in the magnetic gap but I can't seem to notice any rubbing. The gap is fairly wide, maybe about 2x the thickness of the coil, which helped.
I'll give it a try tonight.
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Post by johneppstein on Feb 7, 2022 15:10:18 GMT -6
I've used qtips like you, and also fuzzy wire craft project thingies (what are those called?), which work better I think. Pipe cleaners. They're called pipe cleaners.i |
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Post by svart on Feb 7, 2022 17:46:26 GMT -6
Well, the swapped coil capsule works. It doesn't sound a good as the others but it works at least. It's surprisingly close though. I might try reseating the diaphragm at some point but right now it's not a priority.
So now I have 8 perfectly working mics.
Time to clean them up and sell them.
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Post by stratboy on Feb 10, 2022 19:59:12 GMT -6
You are the 421 whisperer, Chris!
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Post by Deleted on Feb 14, 2022 4:49:07 GMT -6
I've used qtips like you, and also fuzzy wire craft project thingies (what are those called?), which work better I think. Pipe cleaners. They're called pipe cleaners.i I prefer fuzzy wire craft project thingies.. Doesn't roll off the tongue but sounds interesting. |
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Post by johneppstein on Feb 15, 2022 12:29:07 GMT -6
Pipe cleaners. They're called pipe cleaners.i I prefer fuzzy wire craft project thingies.. Doesn't roll off the tongue but sounds interesting. For sure. Might be a bit of a problem when asking directions from a distracted clerk though.... |
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