Has anyone have the Freedom Combi 20 charger/inverter die. Yesterday it stop working and I think it might be heat related. After I plug into shore power the unit indicates there is AC available and about 5 minutes later it shuts down. Since the AC is routed through the unit I get no power onboard. I have sent a tech request to Xantrex but have not heard from them. Has anyone sent a unit back for repair? What did it cost?Jim "there will no coffe this morning" S/V Java