Introduction
Many components of a tablet cannot be safely replaced individually, such as the CPU. Instead, you will likely want to replace the motherboard as a single unit.
Tools
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            Use a plastic opening tool to pry the back panel off by inserting it in between the front and back panel. 
 
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            Unscrew two 1.17x2.9mm Phillips screws from the white connector port. 
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            Lift the battery connector away from the motherboard using a spudger. 
 
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            Remove the clipped ZIF data connector coming from underneath the motherboard. 
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            Lift up the black plastic clip with a spudger. 
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            Pull the connector out gently using tweezers. 
 
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            Remove the following five screws from the motherboard. 
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            Three 1.5x2.5mm Phillips screws 
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            Two 1.55x2.38mm Phillips screws 
 
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            Gently lift the motherboard away from the device. If there is any resistance, check the previous steps to ensure that all connections have been removed. 
 
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To reassemble your device, follow these instructions in reverse order.