Hi there happy to advise.
You elude to the unit getting wet?
No, not to my knowledge.
Well, at any rate if it won't power on, your options are limited.
I'm checking on something for you give me a minute......
OK, go here..........
There is a drop down menu, enter your model number there.
Garmin has a flat rate repair on this model for $79, terribly cheap compared to most GPS units they have.
They will instruct on mailing it in, will fix it and send it back to you.
I wouldn't mention, wetness, letting it dry, etc......
Turnaround s usually 2-3 weeks.
You'll have a good as new unit for less tan 100 dollars.
Hope this helps,
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Well, it was certainly clear.
Let me know if I can help you with anything else in the future.
That I certainly will do.