Sega Saturn Motherboard Replacement

はじめに

This guide will help you replace the motherboard of a Sega Saturn.

First: before disassembling, please get the detailed tools together. There are some plastic sockets that are just really bad, so having the right screw or tool for the job can save you a lot of time.

Second: Be careful removing the Power Supply Board, the pins that hold it in place connect right to the motherboard, and breaking can lead to replacing two parts instead of one.

Third: Do NOT touch the disc reader’s laser (Step 12 for picture). There have been reports of smudging ruining it and making it require replacement, so just avoid touching that area.

Other than that, just read each step through before doing it and this repair will be a fun project.

必要な工具と部品

手順1 Battery

Sega Saturn Motherboard Replacement, Battery: 手順 1、 2の画像 1

Sega Saturn Motherboard Replacement, Battery: 手順 1、 2の画像 2

Press on the plastic lever on the back of the Sega Saturn to pop open the battery slot.

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手順2

Sega Saturn Motherboard Replacement: 手順 2、 3の画像 3

Push up the edge of the battery with the iFixit opening tool to get the battery out of its socket.

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手順3

Sega Saturn Motherboard Replacement: 手順 3、 3の画像 3

この手順で使用する道具：

Tweezers

$4.99

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Use the ESD safe tweezers to pull the battery out of its slot.

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手順4 Case

Sega Saturn Motherboard Replacement, Case: 手順 4、 3の画像 1

Sega Saturn Motherboard Replacement, Case: 手順 4、 3の画像 2

Sega Saturn Motherboard Replacement, Case: 手順 4、 3の画像 3

Remove the five black 13.5mm JIS#1 screws on the bottom of the device. One might be hidden by a sticker.

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手順5

Sega Saturn Motherboard Replacement: 手順 5、 3の画像 3

Flip the device over so it rests right side up.
Lift gently across the seam of the Sega Saturn. If parts get stuck, a light shake or prying with the iFixit opening tool should free it up. Do not use any brute force, as this can damage the case so it doesn't close again.

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手順6 Power Supply

Sega Saturn Motherboard Replacement, Power Supply: 手順 6、 2の画像 1

Sega Saturn Motherboard Replacement, Power Supply: 手順 6、 2の画像 2

Unplug the power button plug on the power supply board. Use the iFixit opening tool if necessary.

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手順7

Sega Saturn Motherboard Replacement: 手順 7、 3の画像 3

Remove the two black 11.4mm standoff screws on the back of the Sega Saturn holding the power socket in place. These screws are tight and easily stripped, so it's suggested to use a standoff screw head.

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手順8

Remove the metallic 12.3mm JIS#1 screw holding down the power supply board.

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手順9

Sega Saturn Motherboard Replacement: 手順 9、 3の画像 3

Lift the power supply board out of its socket, minding the pins that connect it to the motherboard. Some force will be required, but be careful when lifting or shaking the power supply board out.

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手順10 Power Button

Sega Saturn Motherboard Replacement, Power Button: 手順 10、 3の画像 1

Sega Saturn Motherboard Replacement, Power Button: 手順 10、 3の画像 2

Sega Saturn Motherboard Replacement, Power Button: 手順 10、 3の画像 3

Remove the metallic 13.7mm JIS#1 screw on the right of the Power Button.
Remove the metallic 12.4mm JIS#1 screw on the left of the Power Button.

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手順11

Push the plastic resting tray’s pin located here.
Remove the plastic resting tray to free the wire between the power supply board and the button.
Remove the power button when the wire is free.

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手順12 Disc Reader

Sega Saturn Motherboard Replacement, Disc Reader: 手順 12、 1の画像 1

Do not touch the laser reader, as smudges have been reported to ruin it.

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手順13

Pull firmly on the ribbon cable from the end on the motherboard.
Don't worry about pulling it out of its socket; it can be plugged back in.

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手順14

Sega Saturn Motherboard Replacement: 手順 14、 3の画像 3

この手順で使用する道具：

Tweezers

$4.99

購入する

Pry the second cable out of its socket on the disk reader with the iFixit opening tool or ESD safe tweezers. When the lip of the cable gets enough distance out of the socket, it can be wiggled free.

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手順15

Sega Saturn Motherboard Replacement: 手順 15、 3の画像 3

Lift the laser reader slowly out of its slot hosted by these four pins. There is a screw underneath with a cable attached to the motherboard.

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手順16

Sega Saturn Motherboard Replacement: 手順 16、 3の画像 3

Remove the metallic 12.2mm JIS #1 screw. This will need additional hands in reverse to hold the disk reader steady.
Remove the yellow tape on the reader strip and gently remove the disc reader without touching the laser reader.

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手順17 Motherboard

Sega Saturn Motherboard Replacement, Motherboard: 手順 17、 3の画像 1

Sega Saturn Motherboard Replacement, Motherboard: 手順 17、 3の画像 2

Sega Saturn Motherboard Replacement, Motherboard: 手順 17、 3の画像 3

Remove the four metallic 15.5mm JIS#1 screws from the Motherboard Frame.
Remove the four metallic 13.6mm JIS#1 screws from the Motherboard Frame.
Remove the metallic 12.3mm JIS#1 screw from the Motherboard Frame.

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手順18

Sega Saturn Motherboard Replacement: 手順 18、 3の画像 3

Lift the motherboard frame out carefully because of the delicate parts on the motherboard.
You do not need to remove the plastic Power LED Reflector. If it does pop out, don't worry, it can be pushed back into its socket. It may require rotation to fit the case when closed.

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手順19

Sega Saturn Motherboard Replacement: 手順 19、 3の画像 3

Lift the motherboard away from the controller sockets in the front of the device while keeping your hands on the edges of the board
Once the back of the motherboard is above the back of the case, lift backwards to pull the cables out of their sockets to free the motherboard.

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