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When a Dreamcast ask for time and date every time you power on your system, your CMOS battery is dead. This guide shows how to replace the CMOS battery.

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

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

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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.
  • 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.

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

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Disconnect the white fan header from the controller port. Disconnect the white fan header from the controller port.
  • Disconnect the white fan header from the controller port.

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

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Note where the positive and negative terminals go.
  • Note where the positive and negative terminals go.

  • Desolder the old CMOS battery from the controller board.

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Solder the replacement battery holder to two electrical wires.
  • Solder the replacement battery holder to two electrical wires.

  • Solder the opposite ends of the wires to the controller board. Make sure to match corresponding points on the board with where the previous positive and negative terminals were.

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Reinsert the controller board.
  • Reinsert the controller board.

  • Attach the battery holder inside with a self adhesive substance, such as double sided foam tape.

  • Insert the battery into the battery holder.

  • Reverse the disassembly directions to reassemble your Dreamcast.

  • Once your Dreamcast is reassembled, go ahead and connect the Dreamcast to your TV or monitor and power, and reset the clock.

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Sonuç

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

7 başka kişi bu kılavuzu tamamladı.

Dark Sakul

Üyelik tarihi: 14-05-2010

591 İtibar

2 adet Kılavuz yazıldı

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For the step 7, you can get the cmos holder like this from ebay. This holder is perfect fit for the dreamcast controller board and easily replace the cmos battery if it drains out again.

leat - Yanıt

Just as a heads up, the coin cell that was pictured in this guide (a CR2025 from what I can see) is not rechargeable. The stock battery is an ML2430, so a suitable replacement of about the same size as a CR2025 would be cells with the code ML20XX (ML2020, ML2025, ML2032).

Elanna - Yanıt

Something that should be noted, even if the pictures kind of hint at it, is that the power board - the large board to the left of the console in Step 3, picture 1 - needs to be removed BEFORE the controller board can be taken out. On my DC the pins that connect the power board to the motherboard have a surprisingly strong grip, so I needed to pull up on that end with some force to get it off. Definitely something to be careful with, as you don't want those pins getting bent out of shape, never mind broken.

HGB - Yanıt

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