Sega Genesis Model 1 Region Modification

This instructable will tell you step-by-step how to modify your Model 1 Sega Genesis to it may play other region games with a simple toggle switch.

Step 1: Parts Needed

1. Model 1 Sega Genesis
2. Soldering Iron
3. Solder
4. Three small gauge wire
5. Switch
6. Dremel
7. File
8. Philips head screw driver.
9. Patience

Step 2: Disassemble

In this step, we're going to completely dismantle the system.

Step 3: Locating the Proper Jumpers

Now that the board is exposed, you'll need to locate the proper jumpers labeled "JP1" and "JP2".

"JP2" has a bridge between it. Scratch this out using whatever you like.

Also, now would be a good time to heat up your soldering iron.

Step 4: The Wires

Take three different colored wires, preferably the same legenth. Strip the ends and add a bit of solder to the stripped ends. Braiding them is optional.

Step 5: The Switch

Find your switch, and add a bit of solder to the contact points.

Step 6: The Jumpers

Now, we're going to wire the jumpers.

Add a bit of solder to the jumpers, and then add the wire.

Please see the image notations below.

Step 7: The Switch (remix)

Solder the wires to the switch. Be mindful of which one is supposed to be on the center contact point of the switch.

Step 8: Cartridge Door.

Since there's a difference in cartridge size, the cartridge door will need to be modified as well. This is easy.

Again, follow the image notations.

Step 9: Finding a Home for the Switch

Now, you're going to have to bore out a space for the switch.

Follow the image notations.

Step 10: Re-Assemble!

Before you completely re-assemble this, you've probably noticed that the shield might be blocking the wires for the switch. Cut the shield. Don't cut it if you found a better placement.

After that, re-assemble it and bask in the glory of your Sega.