[R-390] Filter repair

[quartz55]

Yeah, I like the idea of just stripping them and holding them next to each other and soldering.  I'll try the finger nail polish too, it's an acetone base as I remember, I wonder if I would put a drop of acetone in the epoxy?  Worth a try to get rid of the surface tension.  I was concerned about making weak spots by bending the wires on themselves.  I'll try the aspirin too, I've been scraping them with the exacto knife and it's a harrowing experience, especially on the wires from the coils, the extension wires can easily be replaced.  I've only been scraping enough to get a good solder flow, not to make it totally clean.  I remember in the 70's we used to just clean them with a hot iron, but the new stuff doesn't seem to want to melt off.

Stereo microscope sounds interesting but working under a microscope is about like looking through the headband magnifier at 3".  Like I say, I've got some surgeon loupes coming, maybe they will help.

Now the idea is how to hold the wires end to end so I can solder them.  These wires are so small and delicate.  I'll work up something.  The alligator clips on the holder device is not precise enough.

One thing I've been thinking about is when pulling the coils out, put them immediately on a piece of blue painters tape and stabilize the wires coming off the coil.  You don't need to be bending these wires any more than necessary.  I broke one off as you can see in my previous post, and it was working fine.

Thank,
Dave