The video after the break [pescado99] demonstrates how to use a cotton swab to apply powdered graphite to the rear of the buttons to make them conductive again.

Moving on from what I'm discussing in this thread a web page I've found talks about using graphite powder to lubricate fans. They say that it can be purchase from auto or hardware stores, but so ...

Graphite is a great conductor of electricity, so using a blend of graphite and talc not only dry-lubricates the insides of the tubes, but also reduces problems with static electricity by lining ...