I recently purchased a 2017 Z3. After doing a pre buy ride, the previous owner took the boat out of the water, but failed to remove the drain plug. A little more than a week after (and a whole lot of rain in between), we finished the transaction. Not surprisingly, I noticed the hull was full of water after getting the boat to my house. The engine seems to be fine, but the radio doesn't work. Static is pumping out to one speaker, even if the volume is muted on the radio. I'm thinking it's a problem with the Amp, but unsure where to start to confirm.