This guide aims to show how to completely disassemble your right Joy-Con without damaging any parts. This disassembly is more difficult than the left Joy-Con due to the additional IR sensor, Bluetooth antenna, and NFC reader.
Using an opening pick or the flat side of a spudger, pry up the battery from beneath it.
There is some light adhesive holding down the battery which may require some force to overcome
Take care not to puncture the battery. Try prying up the battery from one side and using the angle to pull it off the adhesive. If this does not work, use some isopropyl alcohol to soften the adhesive
Insert the flat side of a spudger or an opening pick between the ZR button and the upper bracket. Lift up on the ZR button until the clips disengage and you can carefully remove it.
There are springs beneath the ZR button. Make sure to disengage the clips and remove the button carefully and slowly as the two marked springs will want to fly out
Flip the ZIF connector for the analog stick and pull out the cable
Note for reassembly: this is tricky to get back in. Notice the angle the ribbon cable is at and attempt to get the same angle as you prepare to reinsert the cable into the ZIF connector
Do not pull out the joystick quickly or with extreme force! There is a liner underneath the analog stick that it will likely get caught on which protects the internals from dust and debris. Wiggle out the analog stick carefully lining up the stick center to the liner and using light force
Carefully remove the analog stick liner by pulling up on it with tweezers and lightly pulling on the sections adhered to the upper chassis
One of the adhered sections is under the motherboard of this controller so be patient removing the liner
Note for reassembly: Try reattaching this when the mainboard is not connected as it is difficult to get one of the adhered sections under the mainboard
Note for reassembly: These two ZIF connectors should be connected before screwing back in the mainboard as it is a royal pain to line up the cables and connectors when screwed on
Remove the rumble module by prying up on the corner next to where the rail once was with a spudger. Once out of its socket, use tweezers to pull the cable connector out of the socket. It is inserted quite firmly so be careful not to damage the cable and use your fingernails if needed
There is some mild adhesive holding down the rumble module so take care not to damage it. Additionally, do not remove it fast enough to damage one of its connecting cables if it suddenly breaks free
Remove the adhered NFC reader by prying up on an edge carefully and pulling up on other areas until it can be safely removed (marked is the corner you could pull up from)
The wires on the NFC reader are not protected from poor attempts to lift up this piece. Use your eyes, good judgement, and great care not to damage this component
