Introduction
In this guide we'll see how to get to the the console's main board.
What you need
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Remove the 6 screws with a 4.5mm Gamebit screwdriver from the back of the unit.
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Turn the unit back up and lift the top cover. You can now admire :
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The ejecting mechanism.
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The sound chip. Present on early models, this is the main difference with the later hardware revisions of the console.
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The main board shield.
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The capacitors guard.
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The mechanism is held back in place by a small spring. It's not too tense but be careful not to lose it. Also, note how it's placed for future reassembly.
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Remove the mechanism by slightly lifting the axle from the right and pulling it out.
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We'll need to remove a couple screws with a Phillips #2 screwdriver.
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It's plugged to the main board with a small plastic socket. Simply pull on it to set it apart.
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The front panel is connected to the main board with a ribbon cable. Gently pull it out of its socket.
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The front panel can then be lifted out.
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The chip is held by 2 Philips #2 screws.
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It's then just held by the bus socket on the lower left side of the chip.
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Simply shimmy it out of the socket. You might need the help of a prying tool but don't put to much pressure on the cartridge port.
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The board is now only held by 3 Philips #2 screws.
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Lifting the main board reveals the lower shield that got scrapped in later hardware revisions of the console.
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First, remove the lateral screw (Philips #2, still).
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Turn the board around and unscrew the 4 last screws.
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