Just bought a 2007 Starcraft Pine Mountain popup Truck Camper

Nice clean camper!!! Looks like a lot of future fun!

As said, yard out the old converter or just disconnect the old and wire up a new in place if it’s part of the power center and that is all working and in good order. 
Not a huge undertaking save for maybe spatial challenges as whatever you replace will basically wire up the same. As long as you have decent concept  knowledge and a bit of experience imo.