While replacing an e-unit drum I noticed corrosion on the frame where an insulated wire contacted it (see pictures). No break in the insulation, it just appears to be reacting with the frame.
Anyone seen this before? I don’t think that wire is original (can’t quite read the label but it looks like “temflee”). I’ll probably just replace the wire, but want to make sure there isn’t a different problem here that I need to address.