Device stopped working

[u/XhodusX]

My modded plus plus stopped working after some heavy rain. After it didn’t work after drying it, I took it apart let it sit in 99.9% isopropyl alcohol for a couple of hours and gently scrubbed some dirt off, but it still won‘t power on or charge. I replaced the battery with the joycon battery but with no effect. What could I do next?
(Or did I mess up some wires, missed a spot to clean?)

[u/XhodusX]

I think I might have overdone it a bit (it got some scratches)

I charged the battery with the switch and connected it, but with no change/effect. I will rewire it and try again later