Hej all 
after my FP1 took a unwanted bath in the toilet I took it apart, wiped it dry as good as possible with a microfibre towel, and let it dry on it for 3 days
–> result: I can switch it on, everything seems to work so far, but the display light is rather dark and the display brightness adjustment does not work. In between it seems to have some “bright” moments meaning the screen flickers up in the brightness that it actually should have.
Soo, any idea where the problem might be located? Is it somewhere in the screen or in the motherboard? Can it be due to a left-over of wetness or corrosion somewhere, so that it would be worth taking it apart again and cleaning it maybe with isopropyl-alcohol? Or may it be solved by replacing the screen/motherboard only?
Thankful for any help 
SMALL UPDATE: Problem still not solved - but usable in “vampire mode”
–> A day after I posted the issue, I took the phone apart again, cleaned it with isopropylalcohol and reassembled it after one day drying --> didn’t change anything. Since then I’ve been using it nevertheless - it’s kind of a vampire situation, since I cannot use it in bright locations like outside during the day 