Basics:

• The OEM Dreamcast power supply is a combined 110v/240v AC to DC converter.  This is quite inefficient and noisy, which can manifest in a “fuzzy” video signal. 
• Also, plugging in a UK 240v supply to a 110v Japanese Dreamcast can cause damage to the Dreamcast.

What the robot_retro Dreamcast Power Board Offers:

• Powered from a 15v or 20v Power Delivery USBC charger (e.g. Ankur, Dell, uGreen, etc.).  Most 30W charger USBC will work (they have to be able to output 15v/20v).  I recommend the uGreen Nexode mini 30W as this both excellent quality and value.
• Tested to be between 90 and 95% efficient across all loads. 
• Low signal noise and heat.
• Drop in solution.  No soldering, wires or complicated install required.
• No flashing LEDS, perfect for clear shells.
• Works perfectly with GDEmu.
• Works with all Dreamcast models (PAL, Japanese, etc) and removes the risk of accidentally plugging in 240V into a 110V system and causing damage.
• Overvoltage, over temperature and fused supply.
• 3D printed spacer.
• Other colours can be printed from the files here:

https://www.printables.com/model/748998-dreamcast-usbc-3d-printed-spacer

Installation:

See link for tutorial and review:

https://www.youtube.com/watch?v=G9iqdUs6OB4&ab_channel=JoeBleeps

• Unscrew the four bottom Dreamcast
• screws as shown in the photo.
• Remove the top lid and then remove the two power board screws (see photos).
• Fit the robot_retro board in exactly the same way as the OEM power board was removed.
• Fit 3D printer USBC spacer.
• Button up the console.