Was on the hook over Labor Day weekend and the generator stopped.
Opened the impeller cover and half of the blades were missing. So I got out my spare and started the replacement process.
It took me two hours to get the old impeller out. Access is tough on my 390 MY, but I had done it before...
First night on the hook in the "new" boat and woke up at 4 AM to a tapping/thumping sound. The frequency of the "taps" increased quickly until it was a steady hum. Traced it to the starboard cabin speaker. Stereo wasn't even on(!).
Not quite sure, but I think I opened the port battery solenoid...