Some of the buttons don't work (by 3 users)

Hi, i bought my TZ1 camera about an year ago and it worked perfectly fine till now, i took this weekend some pictures during rain.. i tried to protect it from water.. but i think some drops may have gotten inside because now i can turn it on/off but only the left and right arrow are working and the dial, all the other buttons (zoom, take picture button, main menu, erase picture) are not responding when being pressed. When i enter the SCN1 / SCN2 mode using the dial, camera acts like the up arrow is being pressed continuously so the cursor keeps moving up.