The right R button is a weak design since if you break the button off the Joycon usually needs a new board. If you want to try repairing the button and there isn't any pads left on the board to solder to the you can add jumper wire the the pins in the picture below.
Hopefully someone will find this useful.
You can solder the outer pins to quite a lot of locations on the board but I'm showing the one I use as it's a straight run down from the button.
Hopefully someone will find this useful.
You can solder the outer pins to quite a lot of locations on the board but I'm showing the one I use as it's a straight run down from the button.