no wifi connection signal

no wifi connection signal

my galaxy note has lost wifi signal. i have a second one which is perfect signal from my router. plus a laptop and a sony vio all in one. these all get perfect signal i assume the wi-fi card has gone. i sent it ti a uk samsung repair station, but was informed that it is a hong-kong version and can not be repaired in uk. any ideas please. it is a galaxy note 10.1 2014 ed p605