So, I got a cheap 3ds online (again) and it has a behavior I hadn't seen on my troubleshoot adventures so far. It doesn't turn on at all, not even with a fully charged battery on it. But it does light the orange LED up if I plug the charger. It doesn't seem like water damage since the sticker on the mobo is ok and there is no visible oxidation. The only thing I noticed is that the continuity isn't perfect between the pin that goes to the + terminal of the battery and the + pad on the mobo. Now I made a quick test with the two bridged together and no luck so far. Any ideas?