If you've ever blown into a cartridge hoping it would magically start working, you're not alone — but there's a better way. Dirty contacts are the number one reason retro games fail to load, and cleaning them properly takes less than five minutes with the right tools.
What You'll Need
Before you start, gather the following:
- 90%+ isopropyl alcohol (never use water or lower concentrations)
- Cotton swabs or a dedicated cartridge cleaning kit
- A soft, lint-free cloth
- A security bit screwdriver (for deep cleans)
Avoid using WD-40, household cleaners, or anything abrasive — these can permanently damage the contacts.
The Quick Clean Method
For most cartridges, a quick contact clean is all you need:
- Dip a cotton swab lightly in isopropyl alcohol — damp, not soaking
- Rub firmly along the gold contacts in a back-and-forth motion
- Flip to the dry end of the swab and repeat to remove residue
- Let the cartridge air dry for 30–60 seconds before testing
- Repeat if needed — stubborn grime may take 2–3 passes
This works for NES, SNES, N64, Game Boy, Game Boy Color, Game Boy Advance, and most other cartridge-based systems.
The Deep Clean Method
If the quick clean doesn't work, it's time to open the cartridge:
- Use a security bit screwdriver to remove the screws (NES uses 3.8mm, SNES/N64 use 4.5mm gamebit)
- Carefully separate the shell and remove the PCB
- Clean the contacts directly on the board with isopropyl alcohol and a swab
- For stubborn corrosion, apply Brite Boy with a cotton swab and gently buff the contacts in a back-and-forth motion to lift corrosion without damaging the board
- Follow up with an isopropyl alcohol swab to remove any residue left by the Brite Boy
- Inspect for remaining corrosion — green or white buildup may need additional passes
- Reassemble and test
Console-Specific Tips
- NES: The 72-pin connector in the console is often the real culprit — cleaning the cart alone may not fix the issue. Consider a 72-pin connector replacement.
- SNES & N64: Contacts are more durable but still benefit from regular cleaning, especially on CIB games that have been stored long-term.
- Game Boy family: The cartridge slot on the console can also accumulate dust — clean both the cart and the slot.
How Often Should You Clean?
For games you play regularly, a quick clean every few months keeps contacts in good shape. For newly acquired games — especially thrift store or lot finds — always clean before playing.
Get the Right Tools
Using the right cleaning supplies makes a real difference. Browse our Tools & Cleaning collection for cartridge cleaning kits, isopropyl alcohol, and security bit screwdrivers — everything you need to keep your collection in top condition.
Taking care of your cartridges isn't just about getting them to work — it's about preserving them for the long haul. A clean, well-maintained collection holds its value and plays better. Browse our full retro gaming catalog for games, accessories, and everything in between.