I spent the morning resurrecting old non-working SNES cartdiges that had been donated to the archive. This involved opening them up, applying polish & fixer to the contacts, then re-sealing. I went six-for-six in getting the old cartridges working again!
Included here is a picture of the inside of the SNES game Zombies Ate My Neighbors.
Buoyed by my success, I went back this afternoon and resurrected another seven NES cartridges and eight Atari cartridges. That's twenty-one games in all; pretty good for a few hours' work!