Chosen Solution
I replaced the shell of my right joy con and now it won’t turn off when not attached to the switch, no LEDs, nothing. I’ve checked the battery connecter and there’s no problem. Does anyone know where the problem could be?
I think you messed up your thingy that connects to the switch + has the lights. Is the ribbon in good?
Some connection is probably not connected, watch the battery replacement and double check all your connections. Joy-Con Battery Replacement
