You can use a watchmakers eyeglass and inspect every component close up for dis-colorisation and the obvious green color "mould" and if all looks ok, thank yourself a lucky man to have dried it out properly in the first place.

I once got a bach of mobile phones from a water damaged basement and they were all completely under water for maybe 2 months and after a few of us stripped them down we had a 99% success rate after replacing some minor components such as fuses lcd's and mostly dead batteries.

Some people obviously know very little about electronics to even understand that water damage is not always fatal.
If your dealing with high voltage and high current then the situation totally changes.