Introduction

A guide to remove the Logic Board from the Sega Dreamcast.

Image 1/2: '''Flip the console''' over on its back. Image 2/2: '''Take note of your model number''', in case replacement parts are needed.
  • Verify that the console is disconnected from the AC outlet before you begin.

  • Flip the console over on its back.

  • Take note of your model number, in case replacement parts are needed.

Add Comment

Image 1/3: Image 2/3: Image 3/3:
  • Remove the expansion bay by applying pressure to the small clip on the expansion bay while prying it away from the console.

Add Comment

Image 1/1: The fourth screw is hidden under the expansion bay if it has not already been removed.
  • Locate and remove all four black 12mm Phillips #02 screws from the underside of the console.

  • The fourth screw is hidden under the expansion bay if it has not already been removed.

Add Comment

Image 1/1: '''Flip the console topside up.'''
  • Be careful that the internal components do not topple out.

  • Flip the console topside up.

  • Remove the top cover of the chassis by gently lifting the upper portion of the console.

Add Comment

Image 1/2: '''Remove the white female pin header''' by clamping the clip and pulling it up gently from the power board. Image 2/2: '''Remove the white female pin header''' by clamping the clip and pulling it up gently from the power board.
  • Verify that the console is disconnected from the AC outlet before you begin. If you have just powered off the system, give the capacitors a few minutes to discharge before you begin working.

  • Remove the white female pin header by clamping the clip and pulling it up gently from the power board.

Add Comment

Image 1/1:
  • Remove the two 10mm Philips #02 screws that are fastened to the power block.

Add Comment

Image 1/2: '''Remove the power board''' by using both hands to gently lift the power board away from the console. Image 2/2: '''Remove the power board''' by using both hands to gently lift the power board away from the console.
  • Do not bend the male pin header between the mounted head when you remove the power supply from the chassis.

  • Remove the power board by using both hands to gently lift the power board away from the console.

Add Comment

Image 1/1:
  • Remove the clear plastic film that is tucked between the power supply and the chassis.

Add Comment

Image 1/2: '''Disconnect the white controller cable''' by gently pulling the the cable while wiggling it back and forth until it detaches from the controller board. Image 2/2: '''Disconnect the white controller cable''' by gently pulling the the cable while wiggling it back and forth until it detaches from the controller board.
  • Be gentle with the white controller cable as it can be a bit fragile.

  • Disconnect the white controller cable by gently pulling the the cable while wiggling it back and forth until it detaches from the controller board.

Add Comment

Image 1/2: Image 2/2:
  • Remove the four 14mm Philips #02 located on the controller board.

Add Comment

Image 1/2: Image 2/2:
  • Disconnect the white fan header from the controller port

Add Comment

Image 1/2: Image 2/2:
  • Remove the controller board by lifting it up from the controller port.

Add Comment

Image 1/2: Image 2/2:
  • Detach the orange cable by giving it a gentle pull while wiggling the cable back and forth until it loosens from the logic board.

Add Comment

Image 1/2: Image 2/2:
  • Detach the cables by gently pulling the three GD-ROM cables to remove them from the logic board.

Add Comment

Image 1/2: The console is rotated 90 degrees counter-clockwise in the first photo. The second photo depicts the normal position. Image 2/2: The console is rotated 90 degrees counter-clockwise in the first photo. The second photo depicts the normal position.
  • Remove the two black 12mm Philips #02 screws located on the left side of the GD-ROM bracket.

  • The console is rotated 90 degrees counter-clockwise in the first photo. The second photo depicts the normal position.

Add Comment

Image 1/2: '''Remove the GD-ROM''' by gently lifting it from its base. Image 2/2: '''Remove the GD-ROM''' by gently lifting it from its base.
  • When lifting the GD-ROM, be careful that the top half of the casing does not detached from its base.

  • Remove the GD-ROM by gently lifting it from its base.

Add Comment

Image 1/1: The white fan header may already be detached if you have completed the Controller Port Disassembly Guide.
  • Remove the white fan header by gently pulling it away from from the controller port.

  • The white fan header may already be detached if you have completed the Controller Port Disassembly Guide.

Add Comment

Image 1/1:
  • Remove the two 8.5mm Philips #00 screws from the fan bracket.

Add Comment

Image 1/2: '''Remove the fan''' from the bracket. Image 2/2: '''Remove the fan''' from the bracket.
  • Remove the two 17.5mm Philips #00 screws from the fan bracket.

  • Remove the fan from the bracket.

Add Comment

Image 1/3: '''Remove the three black 12mm Philips #02 screws''' from the right side of the logic board cover. Image 2/3: '''Remove the three black 12mm Philips #02 screws''' from the right side of the logic board cover. Image 3/3: '''Remove the three black 12mm Philips #02 screws''' from the right side of the logic board cover.
  • Remove the five 10mm Philips #02 screws from left side of the logic board cover.

  • Remove the three black 12mm Philips #02 screws from the right side of the logic board cover.

Add Comment

Image 1/3: Image 2/3: Image 3/3:
  • Lift the metal cover from the console.

Add Comment

Image 1/2: '''Remove the logic board''' and set the logic board on an anti-static surface. Image 2/2: '''Remove the logic board''' and set the logic board on an anti-static surface.
  • Before handing the logic board, you may want to use a grounding strap to protect the device from static charge. If you do not have a grounding strip, you may ground yourself by touching a large metallic object.

  • Remove the logic board and set the logic board on an anti-static surface.

Add Comment

Conclusion

To reassemble your device, follow these instructions in reverse order.

11 other people completed this guide.

wkwong

Member since: 11/14/2009

335 Reputation

13 Guides authored

Team

Cal Poly, Team 5-1, Regan Fall 2009 Member of Cal Poly, Team 5-1, Regan Fall 2009

CPSU-REGAN-F09S5G1

5 Members

22 Guides authored

One Comment

helpful but my dreamcast had a different logic board and as well as fan and gd-rom so keep that in mind if u see something different in your unit

Nickolas Wilcox - Reply

Add Comment

View Statistics:

Past 24 Hours: 1

Past 7 Days: 16

Past 30 Days: 103

All Time: 12,280