Your cables will still work, they simply will be brighter than what they used to be because the oxidation is a bad conductor and will shift the tonal response towards a litz wire configuration with is brighter than the equivalent configuration where there is electrical contact between the strand. Try them to see if you like the tonal response or maybe have them be recycled.
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?