Internal power supply has failed or the AC Adapter pack has failed have the AC Adapter tested by a qualified electrician and if faulty replace it if it is all good you will have to contact Nintendo Support to arrange for it to be returned and repaired at a small cost of course if it is outside warranty, I do not think they will charge you for the repairs if it is still inside warranty but they may charge you a small fee for shipping and insurance.
Answers & Comments
Internal power supply has failed or the AC Adapter pack has failed have the AC Adapter tested by a qualified electrician and if faulty replace it if it is all good you will have to contact Nintendo Support to arrange for it to be returned and repaired at a small cost of course if it is outside warranty, I do not think they will charge you for the repairs if it is still inside warranty but they may charge you a small fee for shipping and insurance.