Quote Originally Posted by copycat View Post
Finally got my hands on an old microwave. The circuit board for the LCD has small spots of gold. Definitely isn't copper, maybe brass? I took a gold finger from PCI card and compared side by side. Colors match exact and are bright gold! Microwave is a Sharp. They maybe others like this but covered with green paint or solder.
Yep and that's an IC chip (surface mount) under the black epoxy. Don't know if you have gold fingers on the ribbon cables or just silver.