I have a really old pair of uninsulated Monster Cables with tinned, twisted wire ends and exhibit the same green corrosion you’re seeing. Honestly, I use them in my home theater now and they work perfectly fine. My advice would be that, if you liked how they sounded before, give them a shot and just go by how they sound. Is corrosion optimal? Of course not, but if they still sound good to you then just use them, enjoy them, and don’t worry about it. Just my $0.02 FWIW.
Oxidation on surface of cable under clear jacket
Wondered if anyone has had this problem. I have a pair of “Oval” cables I was going to reintroduce into my system. They’re 15 years old. I noticed that green oxidation had formed over a length of the cable under the clear jacket. Since there is shrink tubing over the spade connector, so I can’t tell if the oxidation has reached the connector. Problem is the manufacturer’s warranty was over many years ago. They weren’t inexpensive. Seems others have had the same issue. I guess I’ll give them a call to see what can be done, but I’m not optimistic. I do have another manufacturer’s cables I can use if this can’t be remedied.. Your thoughts?