Speakers dont work to receive a call lg vewty ?

My phone was subject to water only for a few seconds and i dried it. The phone works ok still, but when i get a call the phone doesnt make a noise when someone rings me, just as if it was on silent. I have checked the settings and its definately not on silent. How do i sort this problem out. When i make a call it works i can hear the ringing tone and when someone speaks. Agggggggghhhhh help im missing calls now :(