Is it possible that once the amp was completely dry, it is fine now?
If you had gotten the amplifier wet without power, then dried it thoroughly before powering it up, chances are excellent that it would be none the worse for the experience.
However, since it was powered up when it was wet, and actually failed when wet, things are not as hopeful.
Nonetheless, the fact that it seems to work now that it is dried out would indicate that no permanent damage (i.e., component failure) has occurred.
I'd do like Paul (d33zY) suggested and make sure it is totally dry, then give it a good test run. Since it does work now, it is probably OK.
tanstaafl.
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