If you've ever had a Sega Dreamcast, you know how awesome of a console it was. I love the dreamcast, but I got rid of the TV in my bedroom. Crap. What was I ever to do? Why, hack it open of course! Oh, sure, I could just as easily go out and buy Sega's "VGA box" for about $30 This mod will tell you how (assuming you have some decent soldering skills) to add a vga port to the back of your Dreamcast, for considerably less than the cost of a commercial VGA box which does the exact same thing. No IC's are involved here, just regular components, like capacitors, resistors and diodes. I plugged my Dreamcast into my LCD monitor, and it works like a charm.
No. 2 Phillips screwdriver
Dremel + cutting bit (steel bur or cutting wheel works well)
3x 220uF capacitors
2x Silicon diodes
2x 4.7Kohm resistors
2x 150ohm resistors
1x Slide or toggle switch
1x Female VGA port
1x 3.5mm stereo audio jack
Step 1: Removal of the top cover.
Remove the four screws on the underside of the dreamcast. There will be one in each corner. If you have a modem for your Dreamcast, remove it to expose the 4th screw.
Flip the whole thing right-side up and take off the top panel. Make sure you didn't leave a disc in the drive (I made that mistake several times while troubleshooting).
Step 2: Remove the GD-ROM drive.
Remove the screws holding the metal assembly to the other metal chassis. The whole GD-ROM drive assembly lifts out, metal chassis and everything. Don't lift out only the plastic part, take the whole thing.
Step 3: Remove the power supply.
Remove the screws that hold the power supply in place. Unplug that white connector that connects up to the power switch. After that, pull the power supply straight up off the chassis. The power supply just clamps itself onto 6 thick wire terminals, so you don't want to put any undue stress on either part.