Camera cannot start after fall into water.

n2tlem, a hairdryer is not going to fix your Passport. If you do not clean it properly it will definitely fail. Just like any other water damaged device, you will have to disassemble yours. Use this teardown as a guide of what you are up against. Once you have it apart, make sure that you clean everything. Take a careful and close look at all components and connectors. Truly assess the damage. Look for major corrosion, evaluate the pins in the connectors etc,. Take a look at all connectors as well as cable ends. After that I would suggest that you clean it a couple of times in sterile water, not drinking water. Use a soft brush and clean it very, very thouroughly with the sterile water. Once you got the gross contamination cleaned, use 90%+ isopropyl alcohol and clean your parts some more. For a proper cleaning, use this guide. It was written for a Apple iPhone 3G but it is still pertinent to your phone as well. I can not stress the importance of a good cleaning enough, so do it over and over while replacing the alcohol after each cleaning. Do not use compressed air for the cleaning since that can drive liquid as well as corrosion particles into areas that will cause trouble later on. Do not use drinking water, if you need to use water, use sterile water. Also, you do not need to leave it to dry for a day. Isopropyl alcohol in the higher concentration will evaporate quickly and dissipate the water. The importance here is the cleaning. The best way would of course be to get it professionally cleaned with an ultrasonic cleaner. Do not forget to replace the battery. This is a must and not an option. It will fail if you do not take care of it now. Then reassemble your phone and evaluate for any further damage. It is of course possible that your camera has shorted out, so you may still have to replace that one as well. Keep in mind that water damage is the hardest to troubleshoot and to repair.