Instructables

How to Make a Portable Game System

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Step 3: The Console

If you already have the console you want to use, you don't have to buy one. If you don't, though, read on...

Old systems can easily be found in attics, closets, garages, and many other places. See if you can buy one for cheap from a friend. Try yard sales. You can always get stuff for cheap at those.

If you can't find an NES from any of the above sources, then you have to resort to eBay. Try to look for one with a case that's in bad shape. We will be taking the board out, so the condition of the case is not relevant. Also, try to find a seller that is in your country, so shipping will be low. Obviously, make sure the description says that the NES works, and check the member's feedback to make sure they are a reliable seller.

But what about those SuperHappyMegaJoy 72,000 in one things?
Glad you asked. The NES clones, or NOAC's (Nintendo On A Chip) could also be used for portables.
Here is one for $25: Link. It only takes 60-pin cartridges, though (Famicom), so you'll need to wire a 60 to 72 pin adapter (try some google searches, couldn't find a guide on this one). You could also try a Super Joy 3. They're good for NESp's, but also only take Famicom cartridges.
 
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could you use a Retro Entertainment System, it uses NES games, not Famicom games
just take it apart and see!
I've done that like 20 times, so i think it'll work
Appollo643 years ago
Play n Trade is another good place to look. They sell many old systems and games. If you have one in your area, they might be worth looking at for an old system.
cucumber2883 years ago
how do i do that with a hyperscan game system
redsoup4 years ago
(removed by author or community request)
1up (author)  redsoup4 years ago
Nice! I'd like to see pictures. :)
shister875 years ago
uhm or you can try collectorscardsandgames.com great site and you dont get screwed over in the end if someone sells you something bad cause they guarantee the products to work