Microwave oven defective keypad

Question

my oven was damaged by water during last years typhoon here in the philippines. when i had it repaired in a sharp service center, they said they have to replace the keypad.
the problem is that sharp is not manufacturing keypads of this model anymore. it was a big disappointment for us considering it is not that old.
i would like to know :

if really, sharp does not manufacture keypads of model R-6G65 anymore
if that is true, can we still make my oven workable?