Ouch, Tou.
Originally posted by taiweitai I am surprised that Pentax did not make it water-proof for their top of the line flash to work with their cameras like k-5
Well, the weatherproof cameras aren't designed to actually go underwater, so that may not have helped: anyway, TOU would likely have a flash with some water *in* there and not much way out. I don't know how feasible it would be to totally button one up, but it'd probably be a desireable feature if they did.
Which leads to the question in my mind, ...Did you actually find or detect any water inside when you retrieved the flash, Tou?
I don't think I've ever actually heard of this kind of thing happening before. I've only tried one of those in a store, and didn't examine that closely, ...but since it was still running, just maybe the design's more water-resistant than we assume.
Good luck, anyway. You're doing the best thing I know of, really.