Introduction
The purpose of this guide is to give step-by-step instruction on how to replace the motherboard on a ColecoVision.
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Start by laying the console face down.
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Remove the eight 15mm Phillips #1 screws from the bottom of the device.
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Flip the console back over.
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Lift the front panel off. I would reccomended using a metal spudger along the rim of the top to safely remove it and set it aside.
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Remove the two 15mm Phillips #1 screws holding the casing in place.
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Carefully lift the casing from the motherboard.
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Remove the center Phillips #1 screw near the cartridge slot.
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Remove the second Phillips #1 screw near the RAM chips.
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Carefully lift and remove the motherboard.
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Conclusion
To reassemble your device, follow these instructions in reverse order.
