THanks for checking.
Let's see. My memory is that others told me there is no way, and it is best to take off screen and clean whole board with rubbing alcohol to clean out water residue.
I was in the UK at the time and was gung ho to try this. 2 problems.
1) No one would sell me isopropyl alcohol in the UK. I went to three Chemists (pharmacists) and two hardware stores and a grocery. I think it showed up on a list of bomb or drug making supplies. It was weird.
2) I couldn't get parts on the ground and could not wait for a shipment. I did find a place in London that would do the repair job but not sell me the part. I don't know why. I gave in. They fixed it for around 100 pounds I think, roughly half price of new one. It works fine now. They replaced the LCD.