Introduction
Hi! I'll teach you how to replace Joy-Con's motherboard! You need:
- Y00 screwdriver
- 00 screwdriver
- Joy-Con you going to repair
- Replacement motherboard (Must fit with Joy-Con you fix)
Tools
Parts
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            Carefully open the Joy-Con backshell, take your time! 
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            Note: It has wires attached, BE CAREFUL! 
 
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            Backshell can get really annoying, so why won't we just unscrew it? Take 00 screwdriver and let's get it done! 
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            Note: DO NOT unscrew bolts on an LED strip. 
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.
One comment
This guide only stops at removing the outer screws and doesn't show the fill process. Please update.