Start by disassembling your dreamcast

Turn your Dreamcast over

Remove the Broadband Adapter by sliding it away from the console

Remove the 4 black screws at the bottom of the console and remove the top section of the case.

Unplug the power connector at the back of power board

Remove the 2 screws holding the power board in place

Gently pull the power board away from the console, this can be quite tricky as their is a set of pins coming through the power board from the main board below and a small clip in the center.

Unplug the ribbon connecting the controller ports to the mainboard

Remove the 4 screws holding the controller ports in place and the 2 screws holding the black fan in place

Gently lift the fan and controller ports out by pulling them back slightly towards the console

Remove the 3 screws holding the GD-Rom drive in place

Firmly lift the GD-Rom drive out of console

Remove the 8 screws holding the mainboard in place

Remove the mainboard from the console and turn it over

This mod works by connecting 2 points on the mainboard which force the console to output a forced PAL-60hz Signal, if you dont use this Mod the console will output a true NTSC signal which can appear black and white on some TV's, you can bridge the 2 points and leave the console to always output PAL-60 but this can cause problems with some PAL games, to get around this problem we can use a switch that will allow us to select between the 2 video modes depending on which game we are playing.

Once everything is removed from your Dreamcast you need to use your Dremel to make a hole in the casing to mount your switch, i personally found mounting the switch next to where the removable Modem/Broadband adapter is plugged in is the best place (please see pictures for reference points). On the switch i used i had to remove a small part of the plastic leg where the GD-Rom drive sits towards the front of the console, i left the leg in place (not a good idea to remove it) but removed some of the additional plastic that was present, this allowed my switch to fit in nice and snug.

You do not need the switch installed at the moment so leave it out, you now want to make a mark on the metal shielding at the bottom of the DC case where it lines up with the hole you have just made in the casing, this will allow the cables you will solder to the mainboard to connect to the switch, once you have made your mark remove that section of the metal shielding with some wire clippers, be careful not to bend the metal shielding too much.

Once you have cut the hole for the wires in the shielding you need to place the shielding back on the mainboard and make a mark with a permenant marker showing where the hole is located, you will need this for routing the wires for the switch in a moment.

Now you need to locate point R422 on the Dreamcasts mainboard, you will find 2 solder points, you can use some solder to join these 2 points to force a permenant PAL-60 signal, i do not recommend this, instead get 2 lengths of wire and cut them to length, both wires need to go from these 2 points and up to where you made the mark for the location of the metal shielding and then upto the switch, leave some extra length for when you strip and tin the wires.

Strip the 2 ends of each cable and tin them, place some flux on the 1st R422 solder point on the Dreamcasts mainboard and place your tinned wire on the top, carefully use your soldering iron to melt some solder onto the point and the solder will fuse the cable to the point, do the same with the second wire. You can very gently tug on the wires to ensure a good joint.

You now need to route your 2 wires up to the mark you made for the hole in the metal shielding, try to keep the wires as straight as possible, once you have the wires in place and they are hanging over the edge of the console you can place tape over the points you soldered and to keep the wires in place.

Place the metal shield over the mainboard (be careful to ensure the wires are placed correctly for the hole you made in the shielding, once the shielding is in place you can place the mainboard back into the console and place the screws back in.

You can now solder the 2 wires to the switch (the switch should not be installed in the case at this point). I used a Single Pole Double Throw switch but ideally you would use an Off/On switch but i only had a SPDT switch available. With an Off/On switch you would solder each of the 2 wires to the 2 contacts on the switch, the switch can then be installed into the case.

Using a Single Pole Double Throw switch as i did their are 3 contacts on the switch, i soldered 1 wire to the middle contact and 1 to the top contact, the bottom contact is left bare. This is set to display an NTSC output when the switch is UP and a PAL-60 output when the switch is DOWN, once you have soldered the 2 wires to the switch you can install the switch into the case.

Once the switch is installed into your Dreamcast case you should cover the internal part of the switch with some tape to ensure the contacts on the switch will not touch any other part of the console.

Thats it, you can now re-assemble your dreamcast

Once you have re-assembled your Dreamcast you need to set its region to either Japan or USA and the video output to NTSC, to do this use the Dreamcast Region Changer disc (you do not need to do this if you are using a Modchip), set the switch to the UP position to allow a standard output, this will output a true NTSC signal which will be black and white on some TV's.

If your TV is displayed in black and white you can now flick the switch and the video output will change from NTSC to PAL-60 and you should now have a colour picture displayed on your TV, this allows you to now play imported games in full colour.

This Mod is only intended for TV's that display an NTSC signal in black white.

The Mod only works for the Composite and S-video ouputs of the console, if your using a VGA cable or RGB scart then the system will display in RGB anyway.

If you have problems with your dreamcast when you have re-assembled it try one of the following:

Ensure all cables are correctly plugged in and secure (internal and external) - the console wont boot if all cables are not correctly inserted.

Disassemble your Dreamcast again and check your soldering to ensure the wire hasnt come lose and that you have soldered to the correct points on the board.

If the disc does not boot in your Dreamcast ensure that you have burned it correctly using Padus Discjuggler, if you have then try a different brand of CDR media and re-burn the disc.

If your TV displays the NTSC signal in colour rather than black and white then this mod willl not be necessary and you shouldnt see any major difference in picture quality.