How to Clean and Maintain NES Cartridge Pins (Step-by-Step)

Blowing into cartridges is a nostalgic ritual—but it introduces moisture and debris that can corrode contacts. Here’s the right way to clean NES pins so your games boot reliably.

What you’ll need

• Isopropyl alcohol (90%+)
• Lint-free swabs
• Soft pink eraser
• Microfiber cloth

Step-by-step

1. Power down and unplug the console.
2. Open the shell with a 3.8mm security bit if doing a deep clean.
3. Start with a dry wipe to remove loose dust.
4. Use minimal alcohol on a swab to lift oxidation—avoid flooding.
5. For stubborn spots, a gentle pass with a pink eraser can restore shine. Finish with alcohol to remove residue.
6. Let everything dry completely before reassembly.

Maintenance cadence

For carts in regular rotation, clean once or twice a year. Store vertically in cases to reduce dust buildup.

Keep playing

Once your pins are pristine, reward yourself with tight controls and crisp visuals. For quick pick-up-and-play sessions, try Dungeon Sprint or lace up the gloves in Ring Champ.