Possible Converter Problem 2005 2720TM

Looking for Help -- My TM was in storage for 10 months -- I set up and charged battery -- Hooked up to 115 V AC power and it aopears that the Converter does not work as we draw DC from Battery and there is no charge to battery. Took TM 2720 on trip to Wisconsin and had to use D battery powered lamps -- weather in 90's and AIR worked. All fuses and breakers appear OK.

Any and all help will be appreciated.

Bob B