Air on a G key

[James]

I had a liquid intervention with my keyboard that fortunately hasn't done any damage to my laptop.
However the keyboard has seen better days. After a few restarts and various issues arising, I've replaced the keyboard.
But during one restart with the old keyboard, all bar the g key would work. Now, even with the new keyboard, the g key is still not working.
Does anyone have any ideas/thoughts on how this could be remedied? I've cleaned the tape fitting the best I can but don't know where to turn to next.
James

[AllYourBase]

Hold down left Alt key and type 71 on the numeric keypad for G, 103 for g