does not work in my bose docking station or hold charge

does not work in my bose docking station or hold charge

My Ipod got a little wet at the beach, it worked fine after I dried it but would not hold a charge when off,I changed the battery and still same. I just tried it in my Bose docking station and it wont work in that, even though it use to . I tried my friends in the dock and it worked.what might need to be replaced or adjusted?

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