My nc6000 is alive again, thanks to these tips. Resoldering of the maxim chip (the square one with pins on each side) did the trick. You have to deassemble it completely to get to the bottom part of the motherboard, be careful not to damage the wirings. I used my macro lens to check of no short circuits were created as it is almost micro-solderings. I did it with a self made soldering pin, I used a 2,5mm2 copper wire (net elecetricity wiring) and made a sharp V shape of about 3-4 mm width. You solder multiple pins at the same time but when you just touch the pins - with very very little soldering tin on the pin - it's enough to resolder them and you don't create short circuits.