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Sega Dreamcast Logic Board Replacement

Introduction

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

What you need

  1. Sega Dreamcast Logic Board Replacement, Expansion Bay: step 1, image 1 of 2 Sega Dreamcast Logic Board Replacement, Expansion Bay: step 1, image 2 of 2

    • 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.

    Edit

  2. Sega Dreamcast Logic Board Replacement: step 2, image 1 of 3 Sega Dreamcast Logic Board Replacement: step 2, image 2 of 3 Sega Dreamcast Logic Board Replacement: step 2, image 3 of 3

    • Remove the expansion bay by applying pressure to the small clip on the expansion bay while prying it away from the console.

    Edit

  3. Sega Dreamcast Logic Board Replacement, Top Cover: step 3, image 1 of 1

    • Locate and remove all four black 12mm Phillips #02 screws from the underside of the console.

    • Note: Remove the expansion bay to locate the fourth screw

    Edit

  4. Sega Dreamcast Logic Board Replacement: step 4, image 1 of 1

    • Internal components can be loose. Be careful that they do not fall out when removing the cover.

    • Turn the console right side up.

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

    Edit

  5. Sega Dreamcast Logic Board Replacement, Power Block (Power Supply): step 5, image 1 of 2 Sega Dreamcast Logic Board Replacement, Power Block (Power Supply): step 5, image 2 of 2

    • 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.

    Edit

  6. Sega Dreamcast Logic Board Replacement: step 6, image 1 of 1

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

    Edit

  7. Sega Dreamcast Logic Board Replacement: step 7, image 1 of 2 Sega Dreamcast Logic Board Replacement: step 7, image 2 of 2

    • 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.

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  8. Sega Dreamcast Logic Board Replacement: step 8, image 1 of 1

    • Remove the clear plastic film that is tucked between the power supply and the chassis.

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  10. Sega Dreamcast Logic Board Replacement, Controller Port: step 9, image 1 of 2 Sega Dreamcast Logic Board Replacement, Controller Port: step 9, image 2 of 2

    • 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.

    Edit

  11. Sega Dreamcast Logic Board Replacement: step 10, image 1 of 2 Sega Dreamcast Logic Board Replacement: step 10, image 2 of 2

    • Remove the four 14mm Philips #02 screws located on the controller board.

    Edit

  12. Sega Dreamcast Logic Board Replacement: step 11, image 1 of 2 Sega Dreamcast Logic Board Replacement: step 11, image 2 of 2

    • Disconnect the white fan header from the controller port.

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  13. Sega Dreamcast Logic Board Replacement: step 12, image 1 of 2 Sega Dreamcast Logic Board Replacement: step 12, image 2 of 2

    • Remove the controller board by lifting it up from the controller port.

    Edit

  14. Sega Dreamcast Logic Board Replacement, GD-ROM: step 13, image 1 of 2 Sega Dreamcast Logic Board Replacement, GD-ROM: step 13, image 2 of 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.

    Edit

  15. Sega Dreamcast Logic Board Replacement: step 14, image 1 of 2 Sega Dreamcast Logic Board Replacement: step 14, image 2 of 2

    • Detach the cables by gently pulling the three GD-ROM cables to remove them from the logic board.

    Edit

  16. Sega Dreamcast Logic Board Replacement: step 15, image 1 of 2 Sega Dreamcast Logic Board Replacement: step 15, image 2 of 2

    • 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.

    Edit

  17. Sega Dreamcast Logic Board Replacement: step 16, image 1 of 2 Sega Dreamcast Logic Board Replacement: step 16, image 2 of 2

    • 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.

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  18. Sega Dreamcast Logic Board Replacement, Fan: step 17, image 1 of 1

    • 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.

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  19. Sega Dreamcast Logic Board Replacement: step 18, image 1 of 1

    • Remove the two 8.5mm Philips #00 screws from the fan bracket.

    Edit

  20. Sega Dreamcast Logic Board Replacement: step 19, image 1 of 2 Sega Dreamcast Logic Board Replacement: step 19, image 2 of 2

    • Remove the two 17.5mm Philips #00 screws from the fan bracket.

    • Remove the fan from the bracket.

    Edit

  21. Sega Dreamcast Logic Board Replacement, Logic Board: step 20, image 1 of 3 Sega Dreamcast Logic Board Replacement, Logic Board: step 20, image 2 of 3 Sega Dreamcast Logic Board Replacement, Logic Board: step 20, image 3 of 3

    • 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.

    Edit

  22. Sega Dreamcast Logic Board Replacement: step 21, image 1 of 3 Sega Dreamcast Logic Board Replacement: step 21, image 2 of 3 Sega Dreamcast Logic Board Replacement: step 21, image 3 of 3

    • Lift the metal cover from the console.

    Edit

  23. Sega Dreamcast Logic Board Replacement: step 22, image 1 of 2 Sega Dreamcast Logic Board Replacement: step 22, image 2 of 2

    • 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.

    Edit
Conclusion

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

22 other people completed this guide.

Author

with 5 other contributors

wkwong

Member since: 11/14/09

529 Reputation

5 Guides authored

Badges: 13

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Team

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

CPSU-REGAN-F09S5G1

5 Members

21 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

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