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how to open nes cartridge without security bit

how to open nes cartridge without security bit插图

Have your Nintendo system ready and close at hand,screw wells exposed and up.Remove any plastic caps and then light the end of the pen. …Once it’s burned for a few seconds and the plastic has kind of melted shut the hollow opening,cram it down into the screw well and onto the screw.Don’t move – let it cool for about 15 seconds. …

How do you open a NES cartridge without a key?

You’ll also probably want a screwdriver that can open NES cartridges (called a Security Bit), or if you’re cheap and really like making things harder for yourself, you can try to use pliers to remove the screws. But you really should just get one. I used to melt the ends of old mechanical pencils to try to make a mold of the screw and use that.

How do NES cartridges work?

First, the screws are typical flat heads, as opposed to the uniquely-shaped security screws that became standard in later video games. On the NES cartridge back, one screw secures each corner, with the final screw located in the middle. Also, on the front of these cartridges, there’s a black/gold-colored seal of authenticity.

Why do NES cartridges have no security screws?

There are two main reasons why this screw variation matters to NES collectors, though one is now obsolete. First, we just mentioned how the 5-screw cartridges include a Famicom-to-NES converter. And, these cartridges don’t even have security screws on them.

How do you remove the back of an NES cartridge?

Use a security bit to remove the screws on the back. If you’ve seen the back of an NES cartridge, you probably noticed little screws in there. These are a special type of security screw that require a security bit in order to remove. You can remove those screws in either one of two ways. [1]

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Where are the contacts on the NES?

On the bottom of the NES game are metal contacts. Rub the side of the Q-Tip with the window cleaner on these contacts. Make sure you rub both sides of the contacts.

How to clean contacts with alcohol?

Be sure to wipe away the alcohol before moving on. After that, take your eraser and rub the contacts two to three times. Take a business card and put it between a piece of 800 grit sandpaper and rub the contacts three times in the same direction on both sides. …

How to use Q tip in window cleaner?

Dip the Q-Tip into the window cleaner/rubbing alcohol that you poured earlier. Be sure to only dip one side of the Q-Tip into the window cleaner.

How to clean a cartridge?

Dust each cartridge with an air blower. Once dismantled, just blow away the dust with the blower, this would make cleaning a lot easier.

How to carve a grove in a flat head bit?

The first option is to take a dremel tool and carve a grove in a flat head bit so the prongs of the bit can grip the screw head. The second is to take a cheap pen you don’t use anymore and heat the end with a lighter and press it into the hole once the tip is thick but not liquid. …

What to do if your cartridges don’t work?

Sort through your cartridges. If you don’t know which cartridges work or not, take your cartridges and try to play them. If some don’t work, put them off to the side because we’ll be cleaning them later. …

Step 1: Opening and Cleaning

Open the cartridge by using the Nintendo bit on the 3 screws located on rear of cartridge.

Step 2

If alcohol alone does not get rid of the grime, put a SINGLE droplet of Bar Keeper’s Friend on an old toothbrush, or microfiber cloth.

Step 3: Optional: Replacing the Battery

If your game no longer saves, the battery needs to be replaced. Remember , these babies are 25+ years old.


This type of alcohol is not recommended for electronics because it contains water. There are other alcohol based products designed for contact or electronics cleaning.

How to clean contacts on NES motherboard?

When you’re ready to start cleaning the contacts on the NES motherboard, just apply some metal polish directly to the contacts, take one of your cleaning rags, and start scrubbing the length of the contacts back-and-forth with some good pressure. You’ll notice right away that the metal polish is removing tons of filth and grime on the contacts, and the cloth is turning dark black or gray, depending on how dirty the contacts were when you started. Once the cloth is almost totally soiled, dispose of it, put some more metal polish on the contacts, and start scrubbing again with a clean cloth until that one is completely dirty. I recommend repeating this cycle several times to get those motherboard contacts as clean as possible.

Why is my NES motherboard not working?

The NES’s motherboard itself could have a more serious problem, likely stemming from the failure of a particular component, severe physical damage, or liquid spilled inside the cartridge. If any of these are the case, the NES may or may not be fixable. All of these situations are extremely rare though.

Why do pin connectors look black?

With the pin connector separated from the motherboard, its metal contacts will be exposed. These usually look extremely blackened and filthy from years of oxidation, and they should be cleaned to maximize your system’s performance.

What to use to get NES back in shape?

Metal Polish! Any household metal polish is the secret weapon that will have your NES back in tip-top shape faster than you can believe. Trust me, there is nothing out there that will remove those built-up layers of grime on your NES’s motherboard contacts as quickly, as easily, and as effectively as metal polish.

How many cloths to clean motherboard contacts?

I’ve found this usually takes at least 5–6 cloths to achieve, and more may be necessary depending on how badly oxidized the motherboard contacts were to begin with. You should definitely invest a little more time/effort/rags/polish in cleaning these contacts than you normally do on a game.

How to put razor blades on connector?

Fold the razor blade inside a small piece of cloth and put some metal polish between either set of pins on the connector. Then gently push the swaddled razorblade down in-between the two rows of pins and begin to drag it back-and-forth through the channel.

What is a 72 pin connector?

A new NES 72-pin connector. The essential part of every Nintendo Entertainment System which must be in good condition to avoid gameplay problems. 3. Replacing or Cleaning the 72-pin Connector. Now you need to deal with the problem of the 72-pin connector.

How to cut sparks off of a screwdriver?

Using the Dremel tool, begin cutting a notch in the end of the screwdriver. As you can see in the photo we’re cutting on the right side of the wheel — this causes the sparks to fly downwards away from your eyes. Of course this shouldn’t be a concern if you’re wearing safety goggles but if you’re like me you probably sluff off in that department.

What tool to use for checkerboard?

A Dremel tool with a cut-off disc. The reinforced kind with the checkerboard texture works best. They usually include a few with a Dremel so unless you’ve busted them all trying to, I dunno, cut diamonds or leftover Malt O’ Meal off bowls, you should have one laying around.

How long does it take for plastic to cool down?

Don’t move – let it cool for about 15 seconds. The plastic is forming to the shape of the screw.

Can you scrap a speaker driver?

If it isn’t already, scrap the driver across an old magnet to magnetize it. Speakers work well, cabinet magnets, really hefty ones on your fridge…

Is Auto Focus blurry?

It’s a bit blurry but you should get the point. (Auto-focus is my sworn enemy.)

Table of Contents

Step 1: Prepare your ROM files
Step 2: Choose a board, or find a suitable donor cartridge
Step 3: Choose your memory chips
Step 4: Expand the ROMs and program your chips
Step 5: Wire the chips to the board
– Using an adapter board
– Rewiring by hand
Step 6: Finalize your game

Step 1: Prepare your ROM files

A forewarning: the games you’ll be able to make are games that are in your region’s video encoding format – NTSC or PAL. If you try to make a game that’s formatted for a different region, you’ll probably get some graphical glitches at best, or a completely non-working game at worst.

Step 2: Choose a board, or find a suitable donor cartridge

This might take some trial and error, but it’s very important to prevent headaches later on, so pay attention!

Step 3: Choose your memory chips

EPROM stands for Erasable Programmable Read-Only Memory. Basically, it holds information (your ROM file) that you can program to the chip, which can be accessed later on by the NES. The data is “burned” into the chip, and can only be cleared by UV light (which is what the little window is for). The other kind of chip you can use is Flash Memory.

Step 4: Expand the ROMs and program your chips

Note that anytime I say “EPROM” in this section, you can also do the same for the Flash Memory. It’s just easier to stick to one device when describing the process.

Step 5: Wire the chips to the board

Note that if you’re using a custom board, you shouldn’t have to rewire anything! You should just be able to plop your programmed ‘PROMs perfectly in their pertinent place! Wow, what an easy step! Don’t forget to put the other necessary parts on your board, too! Skip to Step 6 if you’ve got a custom board.

Step 6: Finalize your game

Now, you’ve got your game all wired up. Stick it back in the cartridge, careful not to pinch any errant wires, and try it out! If it doesn’t work immediately, try these steps.

How to clean a circuit board?

Saturate an end of a swab with the 91% isopropyl alcohol. Holding the cartridge firmly in one hand, insert the wet end of the swab into the cartridge mouth, all the way to the back. Now bring it up against the contact pins on one side of the bit of circuit board that is in the cartridge mouth. Firmly, and vigorously rub the swab back and forth – in small areas, then end-to-end, making sure you have rubbed the whole side thoroughly. Turn the swab a little every so often to expose clean cotton to the contact pins. Keep going until you can rub a clean portion of swab vigorously across the contacts end-to-end and pull it away without the slightest tinge of dirt (really, oxidation, usually).

How many pins does a cartridge need to be in a NES?

When you insert a cartridge into your NES, the circuit board in the cartridge needs to fully connect with the 72-pin connector slot inside the NES console. If this connection point isn’t in optimal shape, your games will work only inconsistently, or maybe not at all.

How many pins are in a NES connector?

Make sure the 72-pin connector inside your NES Console is working properly

What is the best alcohol for cleaning electronic contacts?

Cotton swabs, the kind with the paper/cardboard shafts, like Q-Tips. 91% isopropyl alcohol. I prefer the swabs with paper shafts because the plastic ones often don’t hold the swab part during serious use. High-purity isopropyl alcohol is recommended for the cleaning of electronic contacts.

What level of cartridge cleaning is NES?

NES Cartridge Cleaning: Level 4 - Getting Medieval. DO NOT jump to this step just because you think you want to get your stuff as clean as possible. Really, Level 2 should be sufficient for most cartridges, and the stubborn ones should be good with Level 3.

What type of screwdriver do I need to open a cartridge?

You will need a special Nintendo style screwdriver to open your cartridge. It comes in handy as you work on making sure your games are properly clean. You can buy a single screwdriver, a tip for a replaceable tip screwdriver, or I bought this little kit on Amazon, which gave me a 3.8mm screwdriver for NES/SNES cartridges, a 4.5mm screwdriver for various Nintendo and Sega system consoles, and several other tools with specialized tips for use on electronics.

How long have NES carts been around?

NES game carts are artifacts from a good 30 years ago. They have three decades of history. If you get a game from a friend, a yard sale, even a store – assume you have no idea what it has been through, and that it has not been properly cleaned.

What console was popular in the 80s?

The Nintendo Entertainment System’s reputation as the home console of the’80s has only been burnished over time. And as its notoriety has increased in retro game circles, little myths and legends have popped up that capture the attention of gamers of that era.

Why are Atari carts so cool?

The cool thing about these carts was that, because the screws were simple flat heads, hobbyists could easily remove them and get into the game. Of course, this accessibility was a small part of what killed the overall quality home-console gaming during Atari times, when anyone and everyone could get into the hardware and hack the software. More on this below.

When did Nintendo change the seal color?

Around 1988 Nintendo decided to make some minor cosmetic tweaks to their game packaging. The company decided the text on their black official seal was too wordy, and the also figured it was time for a change of color. So After a minor tweak, in 1989 they changed the seal to white/gold, with fewer words in the text.

Who voiced Golden Axe in 1990?

Did You Know: In 1990 game, Golden Axe from SEGA was voiced entirely by prisoners on death row.

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