[czarcone]

Thanks for your input. Yesterday, a slip buddy did some troubleshooting with me. It appears that the Inverter is not switching into action when off shore power. Plan to meter the batteries, fuse and inverter next. His take is that the batteries could be shot or, the transition switch in the inverter is bad. Will update next week.

So, what did the problem turn out to be.  I'm having similar symptoms.  Unfortunately, the unit is buried in a bad spot behind dinette seat back.