My questions are:
1. Is see may circuit boards from the 1980's with gold plating across the whole board. Is it worthwhile to save the whole circuit board, or just take the gold fingers and contacts and toss the rest?
2. I know that processors have gold in them, but do they also have platinum? I have come across similiar like processors which are not the removable type, but are stationary, that when cracked open are a shiny silver in color with some copper as well. It doesnt seem to be actual silver.. I see this a lot in Cisco like items.
3. I also have seen the same material (shiny silver) connected to it seems like ceramic rectangles. These are around the size of 1/32th of a penny. Any Idea
4. On circuit boards, I also see what appears to be 1/64th sized type of shiny black metal that is soldered in the board. Any idea as well? I dont believe it is a magnent.
5. I have heard that gold plated with cooper can be seperated safely with cooper etching solution. Is this beneficial as far as cost wise, and if so, is there a way to recover the dissolved cooper from the solution, so as to use the solution again and again?
6. I have run across Memory Sticks from time to time which dont have gold contacts but shiny silver ones. What is this metal?
7. I have Memory sticks which are around 15 years old that are still brand new.. I have around 150 of them, being the 256MB type. Should I sell them or just get the gold contact from them and scrap the rest?