So we can get an answer out there, You may not plug in a third party power supply to the dock without risking destroying your dock. The motherboard converts and clocks power in a way that is unique to the adapter itself, so as to prevent damage to the console (tablet). Self destruction isn’t the best choice imo but it’s Nintendo. They can do whatever they want. For anyone else having this issue, buy a new dock, not a new computer chip for the dock. Do not use a third party adapter, despite whatever OP used.