If you can find a vial of Caig Deoxit, that is a pretty good product for cleaning contacts, including tube pins and sockets. I like the super concentrated form of deoxit that is not in a spray can, but has a very thin needle like dispenser. A very small amount on a Q-tip that has been shaved down to fit between the pins works well. This gives a more heavy duty cleaning than the eraser, though I like that approach too.
For the tube socket, I use one of those specialty toothbrushes that are designed to go between the teeth. They look like they have only one fuzzy protrusion on a toothbrush handle.
Good luck on your noise fighting venture.
For the tube socket, I use one of those specialty toothbrushes that are designed to go between the teeth. They look like they have only one fuzzy protrusion on a toothbrush handle.
Good luck on your noise fighting venture.