How do I fix a black screen on a iPod touch?

If your iPod got wet, try to open the back cover of it and let it dry under a fan and only after it dries completely check whether it is working. Don`t dry under direct sunlight or hair drier. Also make sure that you followed the advise of many on here about cleaning it with ethyl alcohol to displace the water that may cause corrosion later on. I guess your best bet would be to replace the screen and see if that will resolve your issues. Worse case scenario at this point with everything else working is a burned out or shortened coil on the logic board. So give it a try and let us know. Good luck. iPod Touch 1st Generation Display Replacement