Did Blowing into Nintendo Cartridges Really Help?

Flickr user Kevin Simpson
Flickr user Kevin Simpson

When I was a kid with a Nintendo Entertainment System (NES), sometimes my games wouldn't load. But I, like all kids, knew the secret: take out the game cartridge, blow on the contacts, and put it back in. And it seemed to work. (When it failed, I'd just keep trying until it worked.) But looking back, did blowing into the cartridge really help? I've talked to the experts, reviewed a study on this very topic, and have the answer. But first, let's talk tech.

Famicom, NES, and Zero Insertion Force

Nintendo Famicom system

The NES console marketed in the US looked very different from Nintendo's original Famicom console sold in Japan. The Famicom (short for Family Computer) is shown above -- it featured a top loading design in which you crammed the cartridge into a slot on the top. (It also featured a snazzy red-and-cream color scheme that to my eye looks a bit like Voltron.) By putting the cartridge in on top, the label on the Famicom cartridge served as a kind of billboard, advertising the game currently being played. When Nintendo created the NES for the US, a major design change was to place that cartridge slot deep inside a VCR-style gray box (shown below). It was similar technology, but hidden in a way that American consumers might assume was more like a familiar VCR -- and more importantly, different from game consoles like the Atari 2600, which were old news. Nintendo wanted to be new, and better -- so it hid its slot.

What Nintendo tried to emulate was a "Zero Insertion Force" (ZIF) connection -- a phrase that sounds like a bad joke about problems in bed, but is a real engineering notion. A ZIF connection is one in which the user doesn't directly press the cartridge into its host connector -- no insertion force is exerted by the user. This is a good thing from an engineering standpoint because users can do things like push too hard, and eventually connectors that require this kind of contact wear out. A typical mid-to-late 80s VCR is a variant of ZIF design: the tape goes in the front, then the machine grabs it and gently pulls it into place. That's a pretty durable design. That's not what the NES had, though. Its slot required insertion force, and it was buried inside a box -- making it hard to fix when things went wrong.

Nintendo Entertainment System

In the NES, the user opened a front flap, slid a cartridge into the machine, and the insertion force occurred at the back of the machine, where the (hidden) cartridge slot lived -- pins within the cartridge crammed up against the slot in the back. Then the user pushed the cartridge down (again emulating the behavior of a VCR) and powered on the console. This little ritual felt very satisfying, but over time the cartridge slot got dirty, its springs wore out, and the cartridges themselves got dirty. All of these factors worked together to cause poor contact between cartridge and slot, which meant your game just didn't work -- the machine couldn't communicate with the cartridge over a bad connection, and frustration ensued.

Metal Versus Oxygen: FIGHT!

Nintendo designed its NES connector using nickel pins bent into a position so that they'd give slightly when a cartridge was inserted, then spring back after it was removed. These pins became less springy after repeated use, which make it hard for them to firmly grasp the game cartridge's connectors. To make things worse, the cartridges themselves had copper connectors. Copper tarnishes when exposed to air, causing it to develop a distinctive patina. While this patina was often not bad enough to cause problems, an overzealous kid (ahem, like me) might notice this effect and (ahem) attempt to remove it using all sorts of things from erasers to steel wool to solvents (side-note: my father, being a computer guy, had access to a magical substance called Cramolin -- apparently worth its weight in gold, it could clean anything). Enough overzealous cleaning could ruin a connector, rendering the cartridge unplayable. I know this because I did it.

Blowing into the Cartridge

When things went wrong inside your NES, the problem was usually a bad connection between the cartridge and its slot. That could be due to tarnishing, corrosion, crud in various places, weak pins in the slot, or other issues. The symptoms of a bad connection could include the game not starting at all, the console showing a blinking light, or the game starting up with garbage all over the screen (below, a photo of Zelda II shows this form of startup glitch). To combat these problems, in the mid-1980s my friends and I somehow learned this secret: if we took out the cartridge, blew in it, and reinserted it, it worked. And if it didn't work the first time, it eventually worked, on the second or fifth or tenth time. But looking back on it, I wondered: did that blowing actually help? And if it did...why? Was dust the culprit, and I was blowing it out of the cartridge? I spoke with several experts (who insisted they were not experts, despite their backgrounds) to find out.

Zelda II glitchZelda II glitch image courtesy of Flickr user Kevin Simpson, used under Creative Commons license. See more glitch images at Flickr!

First up, Vince Clemente, producer of Ecstasy of Order: The Tetris Masters -- a documentary about players of the classic NES Tetris. Clemente said, "[Blowing in the cartridge] is actually terrible for the games and makes the contacts rust. You're really not supposed to do it. But it works. [laughs]" This sums up the problem: although intellectually we knew that blowing into electronics was bad, we did it anyway. It seemed to work.

So I turned to another authority, Frankie Viturello, who is one of the hosts of the gaming show Digital Press Webcast among many other gaming-related projects -- he also worked in a game store for years. Viturello's first response was: "While I admittedly may have dabbled in a little cartridge-blowing as a naive NES-playing youth, I've long-since been an advocate for not doing it with the stance that for whatever it may do to aid in the temporary functionality of an NES, it ultimately opens the door for damage and distress to the hardware." So I went deeper -- in the following mini-interview, I have added emphasis in various places.

Higgins: "How did this lore about blowing into the cartridges spread across the US?"

Viturello: "It was very much a hive-mind kind of thing, something that all kids did, and many still do on modern cartridge based systems. Prior to the NES I don't recall people blowing into Atari or any other cartridge-based hardware that predated the NES (though that likely spoke to the general reliability of that hardware versus the dreaded front-loading Nintendo 72 Pin connectors). I suppose it has a lot to do with the placebo effect. US NES hardware required, on most games, optimal connection across up to 72 pins as well as communication with a security lock-out chip. The theory that 'dust' could be a legitimate inhibitor and that 'blowing it out' was the solution, still sounds silly to me when I say it out loud."

Higgins: "Why would blowing into the cartridges have any effect? It feels like it works, sometimes."

Viturello: "While there are some collectors/enthusiasts who will defend their position that the moisture in human breath will likely cause no damage to an NES cartridge, based on what I've personally seen over the past 20 years, I not only disagree with them, but feel strongly that the connection/correlation between blowing into an NES cartridge and the potential for long-term effects including wear, corrosion of the metal contacts, mold/mildew growth, is sound logic.

"So, WHY does blowing into a cartridge have any effect? I'm not a scientist and I don't have any real empirical evidence, but I'm happy to speculate. The most reasonable explanations -- in my opinion -- are: 1.) The act of removing, blowing in, and re-seating a cartridge most likely creates another random opportunity for the connection to be better made. So removing the cartridge 10 times and putting back in without blowing on it might net the exact same results as blowing on it between each time. And 2.) The moisture that occurs when you blow into a cartridge has some type of immediate effect on the electrical connection that occurs. Either the moisture helps to eliminate/move any debris/chemical buildup that has occurred when the contacts and the pin-readers rub together, or the moisture increases conductivity to a degree that it can send the data through any existing matter that was previously interfering with the connection. Those are my best theories."

Higgins: "What about other ways could you make a cartridge work when it was misbehaving? I've heard about stacking an extra cartridge on top of the one you're playing, to force it down."

Viturello: "Things like pressing down on the cartridge just helped with the connection because everything was horizontal in the pin-connector. Downward pressure pressed the cartridge pins more firmly against the connectors and eliminated some possibility for a missed or imperfect connection."

Studying Cartridge-Blowing

Viturello actually conducted a nonscientific study on this very subject. He took two very similar copies of Gyromite, removed the plastic cartridge shell to expose the contacts (making them easier to photograph), and proceeded to blow on one of them ten times a day (all in one go, to simulate a zealous young gamer's efforts), for a month. The second copy was a control -- it didn't get the blowing treatment. The blown and non-blown games were stored in the same location in his house, so in theory, this test should reveal the visual effects of repeated blowing on cartridges -- though they don't include functional results attempting to play the games. There is at least one issue with the methodology of the test: the cartridges weren't exactly identical to start with (they look to me like slightly different revisions of the same circuit board), so it's theoretically possible that the contacts were coated differently between revisions. Still, it's the best evidence we have, and the results are super gross.

While I encourage you to read the study, I can summarize the results. Here's a look at the cartridges at the beginning of the test:

NES corrosion test - before

And after a month:

NES corrosion test - after

So that's pretty gross, right? It's unclear what the result is -- whether that's copper patina, mold, or what -- but it appears that some effect occurred. See also: this guy's response to the study relating the story of an extreme case of N64 cartridge licking.

Nintendo Weighs In

In a brief note on its NES Game Pak Troubleshooting page, Nintendo states:

Do not blow into your Game Paks or systems. The moisture in your breath can corrode and contaminate the pin connectors.

So the Answer is No

So, dear readers, all signs point to no: blowing in the cartridge did not help. My money is on the blowing thing being a pure placebo, offering the user just another chance at getting a good connection. The problems with Nintendo's connector system are well-documented, and most of them are mechanical -- they just wore out faster than expected.

Having said that, it's true that kids can be grubby, and getting crud into the cartridge or slot was a real problem -- I suspect that most of that crud was not just dust, though, and required a more thorough cleaning than a moist mouth-blast could provide. In fact, Nintendo released an official NES Cleaning Kit in 1989 in an attempt to keep both the slot and cartridges clean. Ultimately, Nintendo redesigned the NES console, releasing an NES 2 console in 1993 that's commonly known as the "top loader." Its main feature? A top loading slot. It was more like the original Famicom, using a slot that held up better to abuse. Similarly, the SNES (Super Nintendo Entertainment System) was a top loader.

Fixing Your Old NES & Maintaining Your Games

If you have an NES with connector problems, it can probably be repaired, and you might even be able to do it yourself. Check out iFixit's repair guides for some common fixes, including a relatively easy one -- fixing the springs that hold up the cartridge slot. While mine never broke, I had a bunch of friends with dead springs. We can fix it!

And when I asked Viturello about cleaning cartridges, he told me:

Viturello: "The best methods for cleaning game cartridges are: isopropyl alcohol and swabs or, more recently I and others have discovered that non-conductive metal polish such as Sheila Shine or Brasso is very effective and also helps to protect against some of the elements that would otherwise cause that natural tarnish that occurs through regular exposure to the elements and standard usage."

Share Your NES Memories

I know we have a variety of old-school gamers out there. Do you remember the tip to wiggle the cartridge side-to-side? What about whacking the cartridge with the palm of your hand before putting it in? I'm curious what tricks you guys got up to, trying to make your game systems work. Also, many thanks to Frankie Viturello for answering my questions -- check out the Digital Press webcast for gaming goodness. (Episode 5 is devoted to the NES.)

Update: I appeared on the How to Do Everything podcast discussing this story. It's fun, check it out!

Follow Chris Higgins on Twitter for more stories like this one.

10 of the Most Popular Portable Bluetooth Speakers on Amazon

Altech/Bose/JBL/Amazon
Altech/Bose/JBL/Amazon

As convenient as smartphones and tablets are, they don’t necessarily offer the best sound quality. But a well-built portable speaker can fill that need. And whether you’re looking for a speaker to use in the shower or a device to take on a long camping trip, these bestselling models from Amazon have you covered.

1. OontZ Angle 3 Bluetooth Portable Speaker; $26-$30 (4.4 stars)

Oontz portable bluetooth speaker
Cambridge Soundworks/Amazon

Of the 57,000-plus reviews that users have left for this speaker on Amazon, 72 percent of them are five stars. So it should come as no surprise that this is currently the best-selling portable Bluetooth speaker on the site. It comes in eight different colors and can play for up to 14 hours straight after a full charge. Plus, it’s splash proof, making it a perfect speaker for the shower, beach, or pool.

Buy it: Amazon

2. JBL Charge 3 Waterproof Portable Bluetooth Speaker; $110 (4.6 stars)

JBL portable bluetooth speaker
JBL/Amazon

This nifty speaker can connect with up to three devices at one time, so you and your friends can take turns sharing your favorite music. Its built-in battery can play music for up to 20 hours, and it can even charge smartphones and tablets via USB.

Buy it: Amazon

3. Anker Soundcore Bluetooth Speaker; $25-$28 (4.6 stars)

Anker portable bluetooth speaker
Anker/Amazon

This speaker boasts 24-hour battery life and a strong Bluetooth connection within a 66-foot radius. It also comes with a built-in microphone so you can easily take calls over speakerphone.

Buy it: Amazon

4. Bose SoundLink Color Bluetooth Speaker; $129 (4.4 stars)

Bose portable bluetooth speaker
Bose/Amazon

Bose is well-known for building user-friendly products that offer excellent sound quality. This portable speaker lets you connect to the Bose app, which makes it easier to switch between devices and personalize your settings. It’s also water-resistant, making it durable enough to handle a day at the pool or beach.

Buy it: Amazon

5. DOSS Soundbox Touch Portable Wireless Bluetooth Speaker; $28-$33 (4.4 stars)

DOSS portable bluetooth speaker
DOSS/Amazon

This portable speaker features an elegant system of touch controls that lets you easily switch between three methods of playing audio—Bluetooth, Micro SD, or auxiliary input. It can play for up to 20 hours after a full charge.

Buy it: Amazon

6. Altec Lansing Mini Wireless Bluetooth Speaker; $15-$20 (4.3 stars)

Altec Lansing portable bluetooth speaker
Altec Lansing/Amazon

This lightweight speaker is built for the outdoors. With its certified IP67 rating—meaning that it’s fully waterproof, shockproof, and dust proof—it’s durable enough to withstand harsh environments. Plus, it comes with a carabiner that can attach to a backpack or belt loop.

Buy it: Amazon

7. Tribit XSound Go Bluetooth Speaker; $33-$38 (4.6 stars)

Tribit portable bluetooth speaker
Tribit/Amazon

Tribit’s portable Bluetooth speaker weighs less than a pound and is fully waterproof and resistant to scratches and drops. It also comes with a tear-resistant strap for easy transportation, and the rechargeable battery can handle up to 24 hours of continuous use after a full charge. In 2020, it was Wirecutter's pick as the best budget portable Bluetooth speaker on the market.

Buy it: Amazon

8. VicTsing SoundHot C6 Portable Bluetooth Speaker; $18 (4.3 stars)

VicTsing portable bluetooth speaker
VicTsing/Amazon

The SoundHot portable Bluetooth speaker is designed for convenience wherever you go. It comes with a detachable suction cup and a carabiner so you can keep it secure while you’re showering, kayaking, or hiking, to name just a few.

Buy it: Amazon

9. AOMAIS Sport II Portable Wireless Bluetooth Speaker; $30 (4.4 stars)

AOMAIS portable bluetooth speaker
AOMAIS/Amazon

This portable speaker is certified to handle deep waters and harsh weather, making it perfect for your next big adventure. It can play for up to 15 hours on a full charge and offers a stable Bluetooth connection within a 100-foot radius.

Buy it: Amazon

10. XLEADER SoundAngel Touch Bluetooth Speaker; $19-$23 (4.4 stars)

XLeader portable bluetooth speaker
XLEADER/Amazon

This stylish device is available in black, silver, gold, and rose gold. Plus, it’s equipped with Bluetooth 5.0, a more powerful technology that can pair with devices up to 800 feet away. The SoundAngel speaker itself isn’t water-resistant, but it comes with a waterproof case for protection in less-than-ideal conditions.

Buy it: Amazon

This article contains affiliate links to products selected by our editors. Mental Floss may receive a commission for purchases made through these links.

11 Facts About Mount Rushmore

It took three years just to carve Washington's likeness.
It took three years just to carve Washington's likeness.
TheDigitalArist, Pixabay // Public Domain

Today, the faces of George Washington, Thomas Jefferson, Abraham Lincoln, and Theodore Roosevelt gaze over South Dakota’s Black Hills, their images sculpted on the granite slopes of Mount Rushmore. An engineering marvel, this unlikely landmark now draws millions of visitors every year.

But the place casts a dark shadow. Built by a Klu Klux Klan sympathizer on land seized from the Sioux during a gold rush, Mount Rushmore is steeped in controversy. Here are 10 little-known facts about its creation and history.

1. The Lakota of the Great Sioux Nation call this mountain Tȟuŋkášila Šákpe, or “Six Grandfathers.”

The Six Grandfathers before construction began on the Mount Rushmore National Memorial.
1905 photo of the Six Grandfathers, before construction began on the Mount Rushmore National Memorial.
National Park Service, Wikimedia Commons // Public Domain

When New York attorney Charles E. Rushmore first laid eyes on the landform in 1884, the presidential sculpting effort was decades away. Reportedly, the visiting lawyer asked his guides if the mountain had a name. Unaware of its importance to the Sioux, they said no—and then one of them added, “We will name it now, and name it Rushmore Peak.” Over time, this evolved into “Mount Rushmore.”

2. Mount Rushmore’s head sculptor, Gutzon Borglum, previously worked on a huge Confederate monument.

Georgia’s Stone Mountain bears a 158-by-76-foot carving of Jefferson Davis, Robert E. Lee, Stonewall Jackson, and their horses. Borglum came up with the basic concept after the Daughters of the Confederacy asked him to sculpt Lee’s head into the rockface. But on February 25, 1925, 10 years into the project, Borglum was fired after disputes with the organization. Stone Mountain was finished without his involvement; then-Vice President Spiro Agnew attended its dedication ceremony in 1970.

3. The idea for Mount Rushmore began with South Dakota's Historian. 

Borglum's model of Mt. Rushmore
Borglum's model of Mount Rushmore.

Intrigued by Stone Mountain, Jonah LeRoy “Doane” Robinson, South Dakota’s official State Historian, contacted Borglum in 1924. The Black Hills were already a tourist destination, but Robinson wanted an audacious new draw. Turning some local geologic features into a lineup of statues depicting western legends like Buffalo Bill Cody, Sacagawea, Red Cloud, Meriwether Lewis, and William Clark sounded like a good business move to Robinson. But Borglum had other ideas. In addition to changing the monument's proposed location—he opted for Mount Rushmore instead of the nearby granite spires Robinson had chosen—he also changed the people depicted. Feeling the place should be a “national monument commemorating America’s founders and builders,” the sculptor went with a presidential theme.

4. Gutzon Borglun liked Mount Rushmore because of its physical attributes.

South Dakota is full of mountains, so why was the monument built on this one? For starters, Borglum realized it was sturdy enough to withstand the rigorous sculpting process. He also liked the fact that Mount Rushmore’s southeastern flank (where the faces now stand) gets good sun exposure. The mountain's fine-grained Harvey Peak granite also influenced Borglun's choice: Though the material was more difficult to carve, it would erode slower than the granite found on other nearby peaks.

5. Construction on Mount Rushmore began in 1927.

It officially ended on October 31, 1941. Borglum unexpectedly died that March, leaving his son, Lincoln, to oversee the last few months of production.

6. Eleanor Roosevelt wanted Susan B. Anthony on Mount Rushmore.

Washington’s head was the first part of the monument to be dedicated, followed by Jefferson’s, Lincoln’s, and finally Roosevelt’s. Meanwhile, a different Roosevelt wanted Susan B. Anthony to join their ranks. First Lady Eleanor Roosevelt wrote to Borglum in 1936, asking him to include the prominent suffragist’s likeness. A bill reiterating this plea was introduced to Congress the following year, but it didn’t get far due to funding restrictions.

7. The construction crew used a technique called “honeycombing” to carve Mount Rushmore.

Construction on Mount Rushmore.
In addition to sculpting these four heads, the workers also carved out a secret room behind the monument.
National Park Service, Wikimedia Commons // Public Domain

Dynamite cleared away 90 percent of the unwanted rock, but some tasks were ill-suited for explosives. Once they came within 3 to 6 inches of the desired depth, Borglum’s workers would drill shallow holes in tightly packed rows. Known as “honeycombing,” this trick allowed them to pull off chunks of granite with their bare hands.

8. Mount Rushmore once had its own baseball team.

While at Rushmore, Borglum and his son organized a baseball team made up entirely of their day-laborers. In 1939, the “Rushmore Drillers” had a great summer, qualifying for the semifinals in South Dakota’s Amateur Baseball Tournament.

9. Mount Rushmore is just two counties away from the U.S.’s geographic center.

Alaska and Hawaii became states in 1959, shifting the geographic center of the U.S. from Smith County, Kansas, to Butte County, South Dakota. The exact spot is located on private land, but roughly 20 miles to the south—in the nearby city of Belle Fourche, South Dakota—there’s a compass-shaped monument honoring America’s midpoint. By car, that attraction’s only 79.4 miles from Mount Rushmore, the most iconic spot in Pennington County.

10. The last surviving Mount Rushmore carver died in 2019.

A prominent member of those Rushmore Drillers, Donald “Nick” Clifford was a right-fielder and the youngest carver ever to work on the monument. He was hired in 1938 at the tender age of 17. Clifford outlived all of his Mount Rushmore co-workers and died in 2019 at 98 years old.

11. Native Americans activists occupied Mount Rushmore in 1970.

The 1868 Treaty of Fort Laramie set aside South Dakota’s Black Hills, Mount Rushmore included, for the exclusive use of indigenous people. Yet the United States hastily redrew the agreed-upon boundaries when General George A. Custer found gold in the region six years later.

In 1980, the Supreme Court ruled the U.S. government had acted illegally. As per the ruling, a compensation trust now worth over $1 billion was set aside for the Sioux. That money has never been collected.

Ten years before that Supreme Court decision, a group of 23 Native American activists climbed Mount Rushmore on August 29, 1970. Demanding that the land be restored to the Sioux, the group defied federal regulations and set up camp atop the mountain. Protestors remained at the site until that November, when bad weather finally drove them out. According to Lehman Brightman, the former President of the United Native Americans organization and one of the event’s architects, it was “the first Sioux Indian uprising” since Custer’s lifetime.