It shouldn't be a problem, provided precautions are taken.
Make sure it is completely disconnected from everything, use de-ionised water as it is far less conductive then usual tap water, and allow it to dry somewhere warm for at least a week to be absolutely sure. While drying, pack it with silica gel or rice which will help to absorb moisture as it evaporates. The de-ionised water is more an extra precaution in case any moisture does manage to remain after this drying process.
This will invalidate the warranty and still does not guarantee success (disclaimer: don't blame me if it goes wrong) but it should significantly reduce the risk.