Step 16: Disabling the Lockout Chip

This is an optional step, you may skip it if you like.

What you need:
Soldering Iron
Small screwdriver
Piece of wire

The lockout chip in the NES was included to prevent pirated games from running in the console. It is also the reason that you get the blinking screen. If the console's lockout chip and the cartridge's lockout chip don't communicate, then the game won't play. Half the time, it's not because of dirty contacts. The games would run fine if it weren't for the lockout chips. Disabling it means a much higher success rate.

To disable the lockout chip on the NES, first locate the actual chip. It is close to where we soldered the video amp, and it is labeled 3193A.

You need to pull up pin 4 of the lockout chip. Taking the whole chip out won't work, because it is connected to the reset line, and the console won't run without it. Instead, find pin 4 of the chip. The first picture shows pin 4. Put the small screwdriver under the pin to kind of pull it out of the hole. At the same time, heat the lead from the other side of the board with your soldering iron. Pull the pin out so it's not connected to the board.

You could be done right there. The lockout chip is disabled right now, but it is still a good idea to connect the pin to ground. Take your piece of wire and solder one end to the pin you pulled up, and the other end to the silver grounding strip going all around the board.

All your games should now run very well. The NES board is now complete. Next we'll build the power supply for it and test it out!
<p><a href="http://www.amazon.com/gp/product/B00OB0S8KE?keywords=5%20Inch%20LCD%20Screen&qid=1444222488&ref_=sr_1_13&sr=8-13" rel="nofollow">http://www.amazon.com/gp/product/B00OB0S8KE?keywords=5%20Inch%20LCD%20Screen&amp;qid=1444222488&amp;ref_=sr_1_13&amp;sr=8-13</a></p><p>will this screen work?</p>
<p>it is cool</p>
<p>I'm sorry if you have already mentioned this but can you tell me what device your battery is from?</p>
<p>If you're looking for a slightly cheaper screen, I'd recommend this: <br></p><p><a href="https://www.adafruit.com/products/947" rel="nofollow">https://www.adafruit.com/products/947</a></p><p>It was meant for the Raspberry Pi, but it would work great for this project!</p><p></p>
<p>If you're looking for a slightly cheaper screen, I'd recommend this: </p><p><a href="https://www.adafruit.com/products/947" rel="nofollow">https://www.adafruit.com/products/947</a></p><p>It was meant for the Raspberry Pi, but it would work great for this project!</p>
<p>Do you have any idea if this would work with a gamecube controller? </p>
<p>I have a question...</p><p>Online I've seen many portables (mainly from GManModz on YouTube) and I've been wondering. This instructable covers making the circuit board flatter okay however what if you want to make it smaller? Because that portable is Huge! and I've seen other portable that are way smallers. (Darth64, GC-Lynx to name a few) so could you please help me?</p>
That gameboy is cool ! <br>you wont sell it?? <br>
<p>You mean <strong>NES</strong>, right?</p>
Would this work as a screen?<br> <br> <a href="http://www.amazon.com/Monitor-Support-Resolution-Automobile-Rear-view/dp/B006MPRFJQ/ref=sr_1_2?s=electronics&ie=UTF8&qid=1378561162&sr=1-2&keywords=lcd+monitor+composite+input" rel="nofollow">http://www.amazon.com/Monitor-Support-Resolution-Automobile-Rear-view/dp/B006MPRFJQ/ref=sr_1_2?s=electronics&amp;ie=UTF8&amp;qid=1378561162&amp;sr=1-2&amp;keywords=lcd+monitor+composite+input</a>
<p>Yes it would. I used a very similar screen on mine and it worked just fine.</p>
<p>Hey, i am trying to make one, but i can't figure out how i would connect an AA bettery pack up to the n64, could i solder it to the AC wire???, do i take out the AC connecter and just solder the leads to the AA straight to where the AC connecter? </p>
<p>If I just wanted to attach the PSOne screen to my NES, is the wiring pretty much the same? To use the PSOne screen's audio and video I mean? And would the NES's original RCA jacks still be usable? Thanks in advance!</p>
I think u should enter the gaming contest 1up
Awesome! Thanks for the help!
hi, I'm preparing to make a portable system but my knowledge of electronics isn't very comprehensive. I have a question about batteries. if the system I want to make portable has a hiher voltage than my batteries will it work? or do my batteries have to have a voltage equal to or greater than what it is trying to power as long as I build a corresponding regulator?
I love this instructable, it is going to be very helpful when i make my own. I was wondering, would there be an easy way to add a battery life indicator so i know when the battery is about to die?
Where can i buy a case for creating such a device and also a screen?
I tried to do this to my nes and the whole 4th pin popped out and my nes doesnt turn on anymore! Can you help please? Ps. Sorry for my bad english.
superb <br>it worked for me <br>
<a href="http://www.aliexpress.com/store/406029" rel="nofollow">http://www.aliexpress.com/store/406029</a><br> game boy DIY front light ,I got some pcs and changed the back light of my game boy
I understand everything having to do with Av cables and other things like that but I have trouble understanding batteries. I would like to use conventional batteries and I only care about performance. The thing is whenever I look up tutorials people bring up regulators and stuff I don't understand. I don't even know how to power the console with batteries. You said nothing about where to plug the batteries in pr where the cables would go. I took apart my game cube and now it doesn't work and I didn't even change anything inside it. I am worried to take apart my new and overheat it like my game cube. Please reply and thanks for this thread thing because I understand little more about batteries now.
define what you mean by &quot;remove the wires&quot; pull them out of their thing or what?
wow! nice job! awesome!
I can't really tell from the pictures, so I wanted to ask - how can you make sure that the new cartridge port is installed the correct way? Does the cartridge only go one way into the port, and that's how you know which way to solder it on? <br> <br>Thanks for the great instructable! I'm not planning on making a portable soon, but I just happened upon a couple of NES boards without cases, and was thinking about making cases for them, and putting a standard cartridge port out the back instead of messing with the finicky ZIF socket.. Your information on where to get the ports is very helpful. <br> <br>Also, could you let me know where the wires from the power and reset buttons on the case go to the blue connector on the NES motherboard? I don't have a case to check, and I'll be needing to add my own power and reset buttons. <br>
my nes died. cpu gets hot fast and blue screen when powered on. i have replaced the connector. anything else i can do? <br>also i reverse engineered a portable dvd player lcd to work without the dvd player control circutry and it now takes composite. 7 inch diagonal screen
This step seems a bit vague, what piece of equipment will I need to use these batteries with the system?
Would a orig. ds screen work
Definately not, it needs av in, ruling out most screens like that.
So if I was using a DVD player.. How would I achieve the connection.. Doesn't the NES take AV Input? At least mine worked when i used a Red yellow white cable...
perhaps you could use right angle brackets to hold a piece of acrylic perpendicular to the shell to support the came cartridge?
another fantastic idea! ive made a few xbox 360 laptops but ive over looked making them completely handheld. i might actually try it but without a doubt it would take a lot of time. great how to!
This is the most AWESOME instructable that i've ever seen. <br>The detailed explanation is a great bonus. <br>Excelent work!
how do you do that with an original xbox?
From what I have read on forums, a handheld would be EXTREMELY hard because it i big and there isn't much that can be removed. However, an xbox laptop wouldn't be out of the question, but still challenging.
or an xbox 360?
or an xbox 360?
Well, I have a friend who's great at making electronics. He made his own <a href="http://www.audiovisualsystemsinc.com" rel="nofollow">audio visual systems in Houston, tx</a> and is now selling them a lot. I have to say I really like what you have here, I think I might get one for Christmas so I can do it too.
I see you have overscan issues with the screen just like me. My PSOne screen is hooked to my model 2 Sega Genesis through direct RGB. No resistors or capacitors. I get a clean signal surprisingly but the screen is shifted a bit off center and has borders all the way round. Any ideas on how to fix it or am I SOL? <br> <br>It also has some garbage showing up in bottom border area but that is from a factory glitch in the Genesis hardware and thus unsolvable unless I start replacing chips.
will this work http://www.onlybatteries.com/showitem.asp?ItemID=11559.47&amp;cat1=20&amp;uid=1096&amp;utm_source=shopzilla&amp;utm_medium=versafeed&amp;utm_term=11559&amp;utm_content=hitech&amp;utm_campaign=rechargeable+replacement+batteries+11+510+200&amp;sid=shopzilla-com
does the voltage matter?
I will be making a portable gamecube. i was trying to find some Li-Ion Batteries for my portable, and, this being my first portable, i had no idea what to get. could you give me some things ( if there are any :P ) to look for in a battery? <br>
also, if it helps, both the 'cube and the 4.3 inch widescreen takes 12 volts.
I was thinking about using an LCD from an old Laptop. I got the data sheet from what I can tell, but I am unfamiliar with it. Could you help me put together a power regulator for it? Or maybe point me in the right direction?
Could I use this same step by step for a gamecube? <br>
Not exactly, considering the GC is a completely different system. :P You'll need a bit of ingenuity to adapt these directions to a Gamecube. Keep in mind it draws quite a bit more power as well.
Okay thanks! Could you link me up to a gamecupe portable page please? Also could I use the same wires in a gamecube portable you mentioned in the other comment (18-22)?
You can look on forums.modretro.com in the Gamecube section, but I'm not sure if anybody's written a full guide for it. In fact, there are really no guides for portables because they take so long to make. <br> <br>And yes, that's a good wire size for the power lines for a GC.

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