switch joycon showing no signs of life, what to do?

I have a Pokemon Scarlet joycon that stopped working after I opened it up for a repair. I double/triple checked everything and it's all connected, I let it charge and nothing. I don't really want to send it to Nintendo since they don't guarantee a replacement of the same style. Should I take it in somewhere to be looked at, or should I just buy a replacement and do a shell swap?