All ActivityMost RecentMost LikesSolutionsRe: ConverterIt is an old Magnetek 740 2. The batteries are brand new and were fully charged. The converter showed charging fully for 30 minutes then dropped to charging 1/2 charge and when I turned on interior coach lights it stopped charging and lights dimmed. I am using a battery maintainer charger right now until I know that converter is bad. All voltage is good with output at 12.2 then 8 then 0 output. The battery charger has been perfect for a week now with no drop in output so I know batteries are good and output to all DC appliances are working correctly.ConverterI have a tu 740 2 converter that charges for about 30 minutes then drops to 1/2 charging and then dead if I use any lights. Is this dead or something else.