The Collector's Handbook, Part 3: Cleaning a Game Boy Without Ruining It

Before you reach for a single cotton swab, take a breath and really look at the Game Boy in front of you. Most of the time, the kindest thing you can do for an old handheld is very little. A soft cloth, a bit of patience and a willingness to stop early will serve you far better than any aggressive method you might find online. Cleaning should make an object safe to handle and pleasant to look at, not brand new. The honest wear, the faint scuffs and the softened edges, is part of its story.

The guiding idea for everything below is reversibility. Prefer steps you can undo, or that leave no trace at all: a swab of alcohol that evaporates, a wipe of mild soapy water, a puff of air. Avoid anything permanent, anything abrasive and anything you are simply not sure about. When in doubt, do less. You can always clean a little more tomorrow, but you cannot un-scratch a screen or un-bleach a shell.

The toolkit

You do not need much, and you should resist the urge to buy a drawer full of chemicals. A short, sensible kit covers almost everything.

Spa day for a handheld that has earned its wrinkles.

High-percentage isopropyl alcohol, ninety percent or higher, is the workhorse. The higher the concentration the better, because the leftover water is what causes trouble. Read the label and make sure nothing like acetone has been added, since acetone can cloud plastics and leave a residue on metal contacts. Pair the alcohol with plain cotton swabs, ideally ones with paper or wooden shafts rather than hollow plastic.

Add a couple of soft, lint-free cloths, a soft brush such as a clean paintbrush or a soft toothbrush kept only for this job, and a can of compressed air or a hand blower for dust. To open a Game Boy you need one special tool: a tri-wing screwdriver, sometimes called a Y-tip. Nintendo used tri-wing screws on the console shell, so an ordinary Phillips will not fit and will only chew up the heads if you force it. The original cartridges use a different fitting again, a 3.8mm gamebit, so a small bit set aimed at retro consoles is a worthwhile buy. Optional but kind to the plastic: a pair of disposable gloves, which keep the oils and salt from your fingers off the surfaces and the contacts.

Cartridges and contacts

If a cartridge is misbehaving, dirty contacts are the usual culprit, and they are also the easiest thing to fix well. Dip a cotton swab in high-percentage isopropyl alcohol, not dripping, just damp, and gently wipe the gold contacts along their length. Turn the swab as it picks up grime and reach for a fresh one when it darkens. Let the alcohol evaporate fully, a minute or two, before you slot the cartridge back.

Old plastic, gentle hands, no heroics.

Please skip the old pencil-eraser trick. It is everywhere online, and it does seem to work in the moment, but an eraser is mildly abrasive and can slowly wear away the thin plated layer on the contacts, and it tends to leave crumbs and residue behind. Isopropyl alcohol cleans just as well without any of that risk, which is why it is the method most careful collectors now prefer. Avoid seventy percent rubbing alcohol too, because the extra water it carries can encourage corrosion on metal.

The same gentle approach works for the cartridge connector inside the console, though you rarely need to go that far. A single careful swab, then a little time to dry, is almost always enough.

The shell and screen

For the outside of the case, start with the least invasive option. A soft brush and a puff of compressed air will lift dust from the seams, the button gaps and the speaker grille. Hold the can upright and use short bursts from a little distance, so you do not spray cold propellant onto the plastic.

Grime that a brush will not shift usually comes off with a cloth barely dampened with mild soapy water. Work gently, wring the cloth well and keep moisture away from any openings. If you want to clean the shell more thoroughly and you are comfortable opening the console, the safest route is to remove the two case halves entirely and wash the bare plastic in warm soapy water, well away from the circuit board, then dry it completely before reassembly. Water and electronics do not mix, so the board itself should never go near the sink.

Sticky residue from an old price sticker calls for patience rather than force. Let a little soapy water or a dab of isopropyl alcohol sit on the spot to soften it, then coax it away with a soft cloth or brush. Do not scrape at it with anything hard or sharp, and do not scrub with abrasive pads, because a scratched or hazed shell cannot be undone. For the screen and its plastic lens, less is more: a dry or barely damp microfibre cloth, wiped softly, with no solvents pooling at the edges where they could seep behind the plastic.

When to leave it alone

Some Game Boys should not be cleaned at all, and knowing which ones is a real skill. If an item is factory sealed, boxed in mint condition, or professionally graded and encased, leave it exactly as it is. Opening the case, breaking the seal or cleaning the surface of such a piece can wipe out much of its value in a single afternoon, and that value does not come back. A graded slab is worth what it is precisely because it has been left untouched and verified.

The same caution applies, in gentler form, to any piece you suspect is rare or valuable. If you are not certain, treat it as if it were, and stop. There is no rush. A little honest dust on a special item is far safer than an experiment you cannot reverse. When something genuinely valuable needs attention, it is worth asking an experienced collector or a specialist before you touch it.

Restoration versus preservation

There is a real difference between preserving an object and trying to improve it, and the line matters. Preservation keeps an item stable, clean and honest. Improvement, the urge to make a yellowed shell look factory fresh, is where most of the damage is done.

Whitening treatments are the clearest example. The popular method uses hydrogen peroxide and strong light to reverse yellowing, and it can look impressive at first. But long-term reports are unkind: treated plastic has been seen to yellow again, sometimes worse than before, and to develop streaks and blotches that untreated pieces do not. Many now regard whitening as, at best, a temporary cosmetic fix that may cause irreversible harm to the plastic itself. Repainting a shell carries the same warning in bold: it permanently alters an original finish and, on anything collectible, usually lowers its worth rather than raising it.

None of this means you cannot enjoy tidying up a well-loved Game Boy. It simply means choosing the gentle, reversible path and being honest about when to stop. A clean, original, slightly aged handheld is a lovely thing. It does not need to pretend it just left the factory in 1989.

If you enjoy careful, collector-minded guides like this one, you are always welcome to browse the rest of our Journal at the Game Boy Museum. Come in gently, take your time, and treat every little machine as if it has a story worth keeping.

The Full Series

Part 1: What a Grade Really Means · Part 2: Storing and Preserving Your Game Boys · Part 3: Cleaning a Game Boy Without Ruining It (you are here)