Water damage LCD not displaying

There's so many factors in this it's not even funny. However, this should help you out in a hurry.

1. Water in the LCD. That'll kill it fast.

2. Corrosion from water on the motherboard. (from chemicals in water).

So, lets see if the phone turns on. Power it on, leave it sit for a minute. Does it make noise? Try turning silent mode on and off. Does it vibrate?

If not, I doubt it's turning on. Lithium in the battery HATES water. If water gets in the battery, it burns up. So that could be a problem. Another problem could be the corrosion on the motherboard.

If it were me, I'd take the phone completely apart. I'd get the motherboard off and get some 99% isopropyl alcohol (not the 50% or 70% drug store crap) and let it sit in it for about half an hour. Take it out, scrub LIGHTLY with a clean toothbrush. Repeat but with about 15 minutes. Do that a few times and reassemble. See if that works.

Water damage is never 100% fixable. So there's a chance you may not get it working. I don't do too many water damage fixes, but the ones that I do usually work. I'm at about an 85% success rate. Hopefully you can be at 100% for this one. Good luck!