My iPod screen is dead (it fell in the water)

a week ago my ipod touch 3g fell in the water (pool) for like 5 seconds. The first day i serveral times was trying to turn the device on but nothing happend the screen was still was black, i also tried to charge it but i think that was a little stupid from me. 2 hours later i tried to turn it on and i saw the apple logo on a very low brightness but then it became black again. it was laying for a 5 days in a bag with rice. Now if i charge my ipod i hear a noise from the ipod that its charging and itunes can read it but it has an passcode on it so i cant acces it and if i hold the home button and the power button it makes a screenshot and if i hold it longer it will become in DFU mode cause itunes wont read it so please can someone help me to fix it. (sorry for my bad english)