Introduction
This guide will show to replace the neck connection that combines the neck to the main body of the guitar.
Tools
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            Unscrew the 11 screws securing the back of the body using a T10 Torx screwdriver. Each screw is 1 cm long. 
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            Push level, this will detach the back of the guitar from the front. 
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            Carefully remove the back of the body 
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            The battery pack cord is attached to both sides of the guitar, be careful not to tear it apart. 
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            The neck connector may be stuck to the back so be sure to detach it before fully pulling 
 
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            Remove the 10 screws (each are 1 cm long) on the back of the neck using a T-10 Torx security screwdriver. 
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            Remove the back of the neck. 
 
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            First check to see if the button motherboard is not damaged. 
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            Next, make sure the wire is not damaged. 
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            Then make sure that the connection motherboard is also not damaged. 
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            If any of these parts are damaged, then it will need to be replaced. 
 
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            Check to see if the neck connection chip is not damaged inside of the guitar. 
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            Make sure that all 8 prongs of the chip are not damaged or broken. 
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            If the neck chip is damaged then it will need to be replaced. 
 
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            The lock mechanism may be another reason for trouble in your neck connection. 
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            Use the guitar tear down to open the guitar to this point. 
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            Start by unscrewing the two screws holding down the main connection parts. The first screw is 1 cm and the second screw is 0.8 cm. 
 
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            Take the spring off the main connection mechanism. It should come off pretty easily. 
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            If this spring is broken or snapped, then it will need to be replaced. 
 
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            Pull out the main connection mechanism. 
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            Make sure that it is not broken or it will need to be replaced. 
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            This can be put back together by inserting the mechanism again, attaching the spring and screwing the two screws back in place. 
 
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To reassemble your device, follow these instructions in reverse order.